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    <title>花小钱，办大事，值得入手一台信怀德D808收音机</title>
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<p style="text-align: center; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">作者：科林&middot;纽维尔</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">作者简介：</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">科林・纽威尔，居住在太平洋上的温哥华岛，不列颠哥伦比亚省维多利亚市。他的博客自九十年代末上线，乐于分享流行文化与美食文化相关话题。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">&mdash;&mdash;&mdash;&mdash;&mdash;&mdash;&mdash;&mdash;</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">早在我还是十几岁初接触收音机的时候，陪伴我的那台机子有五只电子管，刻度盘几乎没有校准，靠白炽灯照明；它的听感温润，像冬日手套一般暖和，而它能做到的 &ldquo;精准定频&rdquo;，放在当年的标准来说</span></span><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">&mdash;&mdash;</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">说白了，一点都不准！</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">七十年代初那会儿，玩收音机全靠练出一种肌肉记忆。举个例子：经由加勒比海博奈尔岛转播的荷兰国际广播电台，固定守在6165千赫。</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">厄瓜多尔基多的HCJB电台每晚准时出现，稳得如同万有引力，频率</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">为</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">9560千赫。加拿大广播公司北部频道则在9625千赫，还有其他不少台。</span></span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">我这样心思活络、有点书呆子气的少年，很快就在本子上记下刻度盘上各个电台的位置，单凭台呼</span></span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">锁定频率，把这些位置刻进肌肉记忆里。说真的，那是一段黄金时光。和所有新爱好一样，技术懂得不多，但是探索发现带来的兴奋感却无比强烈。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">到七十年代中期，我的收音机里电子管换成了晶体管，偶尔还能见到早期模拟集成电路。数字频率显示、频率合成技术，还要再等几年才问世。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">一晃四十多年过去，如今我们有了像</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">信怀德</span></span><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">D-808这样</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">小巧</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">的便携机。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">装上电池整机重310克，尺寸14.5&times;8.7&times;2.7厘米，刚好能稳稳托在手掌里。它性能不俗，低调不惹眼，随便多大的随身包、登山包，或是相机肩包都放得进去。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 黑体; font-variant: normal; text-transform: none; font-weight: bold;"><span style="letter-spacing: 2px;">一、接收范围</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">来看一下它的接收频段：</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">调频：87.5</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">至</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">108兆赫（可</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">设置为</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">6</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">4至</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">108兆赫）</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">长波：150</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">至</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">450千赫</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">中波：522</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">至</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">1620千赫（9千赫步进）/ 520</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">至</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">1710千赫（10千赫步进）</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">短波：171</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">1至</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">29999千赫</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">航空波段：11</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">8至</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">137兆赫</span></span></p>
<p style="line-height: 2em;"><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/1096c9659a9f93e5f1f2b7b3495cbacc.jpeg"></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">频段覆盖非常全面。不过不同国家的接收情况差别很大，我不太建议到处宣扬它能收航空频段，警惕性高的边境官员可能会觉得这个功能 &ldquo;可疑&rdquo;。稳妥起见，对外就称它是调幅调频收音机。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">除了优秀的调幅（长波）、调频接收表现，它的短波能力相当亮眼，还自带单边带功能，可以</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">收听</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">业余无线电电台、收听高频航空气象、海事信号、抄收各类电码，还有很多有意思的信号。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">顺带一提，</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">信怀德</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">D-808没有独立的同步检波模式；它是靠单边带，可在上边带、下边带之间切换，来实现近似同步检波的效果&mdash;&mdash;前提是你懂怎么操作。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">机子内置500个存储频道，说</span></span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">明书和玩家圈子里习惯叫&ldquo;页面&rdquo;。存储可以手动录入，也能用ATS自动搜存。ATS用来扫存本地调频台、规整频道很好用；想用它</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">在</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">傍晚</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">时分</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">扫存中波或者长波，就不怎么实用了。这个功能有人爱，有人无感。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">自带可充电锂电池，市面上绝大多数USB电源适配器都能给它充电，几乎走到哪都能补电。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 黑体; font-variant: normal; text-transform: none; font-weight: bold;"><span style="letter-spacing: 2px;">二、上手体验</span></span></p>
<p style="line-height: 2em;"><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/52ed34255220c70486254be55ad5a015.jpeg"></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">切换短波米波段的操作很顺手：按一下SW，直接回到上次收听的短波米波段；反复按SW，就会顺着频率由低到高，依次切换各个短波米波段。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">对于我们这些中波爱好者，D-808内置磁棒天线，很适合捕捉微弱信号，也能用来测向，还可以很方便地外接大环天线或者有源天线。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">配有3.5毫米天线插口，适配所有有源、无源长线天线，平衡天线、非平衡天线都能用，能从很多方面拓展接收能力。另外，如果文中哪个术语你看不懂，尽管发邮件问我，我给你细细解释！</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">显示屏：不少玩家吐槽这块屏幕，嫌显示区域偏小、布局一般，尤其纠结分给频率显示的像素。频率显示大约占整个屏幕四分之一。我用着觉得还行，好不好用很大程度看个人视力。屏幕左上角固定显示频率；右上角是四模式显示区，可以切换：时间、闹钟时间、环境温度，还有以dB&mu;为单位的信号强度、信噪比。看着硬核，实用性很强！有什么用呢？看懂信号电平，方便对比不同电台的信号强弱、微调调谐、调试天线、无线电测向，诸如此类。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 黑体; font-variant: normal; text-transform: none; font-weight: bold;"><span style="letter-spacing: 2px;">三、</span></span><span style="font-size: 14pt; font-family: 黑体; font-variant: normal; text-transform: none; font-weight: bold;"><span style="letter-spacing: 2px;">总结</span></span></p>
<p style="line-height: 2em;"><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/1e588d2c8f403c51dd2f9df7bf0d91e6.jpeg"></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">对比我早年用过的机子，放在上世纪50年代之后直到今天的任何年代，这都算得上梦幻收音机。前面说过，我那台1965年的收音机只有</span></span><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">6&mdash;</span></span><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">8</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">个</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">晶体管，刻度模拟、精度粗糙，可夜里照样能听到上千英里之外的电台。D-808也是一样，灵敏度一点不差，功能齐全，性价比极高。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">有些人会说：&ldquo;可是科林，短波早就没落了，调幅广播也没人听了！&rdquo; 哪怕你住在北美西海岸&mdash;&mdash;公认的高频/短波接收边缘地带，很多日出清晨的接收景象依然惊艳：南亚、中亚、东亚的电台挤满刻</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">度盘，传来各式动听的音乐与语言。</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">信怀德</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">D-808花小钱就能换来极强的体验。机身低调小巧，随手丢进过夜包或者登机箱。你随时都能收到本地、</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">周边区域</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">新闻，不会和外界失联。</span></span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">所有无线电爱好者都值得入手一台D-808，它也理应出现在每一套应急装备里。这点我怎么强调都不为过：应急包里一定要放一台电池供电收音机，和急救包、饮用水、干粮放在一起。</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">信怀德</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">D-808就是一台适合放在伸手就能拿到地方的理想收音机。注意安全，静心收听，享受乐趣。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">来源：colinscafe</span></span></p>
<p style="display: none;">&nbsp;</p>
<p style="margin: 24px 0 0; padding: 12px 14px; background: #f7f8fa; border-left: 4px solid #07c160; color: #666; font-size: 14px; line-height: 1.8;">来源：<a href="https://mp.weixin.qq.com/s/ABjSTX1mkzk7e-3D9bvvTQ" target="_blank" rel="noopener noreferrer">收音机评论译介</a></p>]]></description>
    <pubDate>Mon, 09 Nov 2026 17:55:58 +0800</pubDate>
    <dc:creator>广播发烧网</dc:creator>
    <guid>https://www.5bcl.com/jiaoliu/4866.html</guid>
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    <title>花一百多买台只能听FM的海外老索尼，看似不划算，实则另有深意</title>
    <link>https://www.5bcl.com/jiaoliu/4869.html</link>
    <description><![CDATA[<!--?xml encoding="utf-8" ?-->
<p style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px 0px 24px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; clear: both; min-height: 1em; color: rgba(0, 0, 0, 0.9); font-family: 'PingFang SC NEW', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', 'Hiragino Sans GB', 'Microsoft YaHei UI', 'Microsoft YaHei', Arial, sans-serif; font-size: 17px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.544px; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; background-color: #ffffff; text-align: left; line-height: 1.8; visibility: visible;">&nbsp;</p>
<p style="margin: 0px 0px 16px; padding: 0px; box-sizing: border-box !important; border: 0px; list-style: none; -webkit-tap-highlight-color: transparent; font-family: Arial, sans-serif; color: #24292e; font-size: 16px; font-style: normal; font-variant-ligatures: no-common-ligatures; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">昨晚我在夜市里面走动。当我经过一个卖旧电器的摊位时，一台索尼收音机让我的目光停了下来。它的标价是一百二十九元，我迟疑了一会儿，不过最后还是拿出钱把它买了下来。这台设备有着特别的来历；买下它不单单是为了听到声音，更是为了体会这次偶然碰面所带来的那份难得的开心。</p>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/a9af2d092e0b2e91e49ae4c927ebf86e.jpeg"></section>
<p style="margin: 0px 0px 16px; padding: 0px; box-sizing: border-box !important; border: 0px; list-style: none; -webkit-tap-highlight-color: transparent; font-family: Arial, sans-serif; color: #24292e; font-size: 16px; font-style: normal; font-variant-ligatures: no-common-ligatures; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">这台机器的型号是 XDR-P1DBP，这是索尼在 2015 年专门为了欧洲市场去销售、而且从来没有在国内正式发行过的产品。有一点让人觉得有意思的是，虽然它是在中国制造的，但是它只被用来向海外进行销售。这种在国内生产同时又出口到海外的情况，让它带上了一种特别的地方。它是数字广播开始普及那个时代的一个实物样本，是专门为了接收 DAB 数字信号而被设计出来的。</p>
<p style="margin: 0px 0px 16px; padding: 0px; box-sizing: border-box !important; border: 0px; list-style: none; -webkit-tap-highlight-color: transparent; font-family: Arial, sans-serif; color: #24292e; font-size: 16px; font-style: normal; font-variant-ligatures: no-common-ligatures; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">这台机器外形紧凑方正，拿在手里也不觉得重。正面有一个大的蜂窝状网罩，里面还藏着扬声器。所有控制按钮，像是菜单、自动调谐和模式切换，都放在右侧；布局简单，也没有多余的装饰。天线是一根伸缩杆，用的时候可以伸展到够长的长度，不用的时候就收回来并紧贴机身，这样便容易放进外套口袋。</p>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/f59bfb88f52550ad4254b737266ed4b8.jpeg"></section>
<p style="margin: 0px 0px 16px; padding: 0px; box-sizing: border-box !important; border: 0px; list-style: none; -webkit-tap-highlight-color: transparent; font-family: Arial, sans-serif; color: #24292e; font-size: 16px; font-style: normal; font-variant-ligatures: no-common-ligatures; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">屏幕是一个带着橙色背光的小 LCD，上面显示着频率和时间。当 RDS 功能被打开的时候，还能看见电台发出来的文字信息。要是仔细看外壳的话，能发现一些轻轻的划痕，这也许是前主人随身带着它的时候弄出来的。不过，金属网罩上没有生锈的样子，按钮和旋钮摸起来是紧的而不是松的，所有的功能都运行得正常，也没有藏着的毛病。</p>
<p style="margin: 0px 0px 16px; padding: 0px; box-sizing: border-box !important; border: 0px; list-style: none; -webkit-tap-highlight-color: transparent; font-family: Arial, sans-serif; color: #24292e; font-size: 16px; font-style: normal; font-variant-ligatures: no-common-ligatures; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">开机之后，我先试着用了一下 FM 调谐功能；它覆盖的范围是 87.5 到 108 兆赫兹，跟国内的标准频段是一样的。步进的设置挺合适，能够稳稳地锁住当地的电台。当信号不错的时候，内置扬声器发出来的声音很清楚，背景的噪声也控制得还可以。在调节音量的时候，感觉也很顺。侧面还多了一个单独的耳机插孔，让你可以插上耳机安静地听，这样就不会吵到别人了。</p>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/74dc14d7d9e21ef8bd7e25493afb873b.jpeg"></section>
<p style="margin: 0px 0px 16px; padding: 0px; box-sizing: border-box !important; border: 0px; list-style: none; -webkit-tap-highlight-color: transparent; font-family: Arial, sans-serif; color: #24292e; font-size: 16px; font-style: normal; font-variant-ligatures: no-common-ligatures; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">机身上面带有醒目的 DAB 标志，可是这个功能在中国完全没法用。这是因为国内没有对应的地面数字广播基础设施，而且设备是在欧洲频段进行工作的。所以，这一主要功能就变成了装饰。另外，它也不支持中波或者短波的接收，只限于调频广播。从纯粹实用的角度来看，这就代表了存在明显的功能限制以及固有的缺陷。</p>
<p style="margin: 0px 0px 16px; padding: 0px; box-sizing: border-box !important; border: 0px; list-style: none; -webkit-tap-highlight-color: transparent; font-family: Arial, sans-serif; color: #24292e; font-size: 16px; font-style: normal; font-variant-ligatures: no-common-ligatures; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">供电这件事完全不用去担心，因为它里面装有锂电池，这块电池是经由 Micro-USB 接口来充电的。你能够拿任意一条旧的安卓数据线去给它充电，所以不必特意去找专用的充电器。在侧面设有三个快捷键，这些键让你可以把常听的电台存下来，并且按一下就马上转到那些电台去。在这些按键的边上还有一个锁定开关，这个开关能保证放在口袋里时，不会因不小心碰到而把设备关掉或者把频道换掉。</p>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/8566a3c51ee99347740715eb73d9161d.jpeg"></section>
<p style="margin: 0px 0px 16px; padding: 0px; box-sizing: border-box !important; border: 0px; list-style: none; -webkit-tap-highlight-color: transparent; font-family: Arial, sans-serif; color: #24292e; font-size: 16px; font-style: normal; font-variant-ligatures: no-common-ligatures; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">花一百多块钱去买一台只可以接收 FM 的二手海外收音机，对大多数的人来说也许很不合算，因为用同样的价钱能够买到全新的机器，但是对于喜欢老索尼设备的人来说，他们买的不是最高的性能，而是设计的美感和仪式的感觉，看着橙色的屏幕亮起来、频率慢慢地滚动所带来的那种体验是普通的收音机没有办法给出的。</p>
<p style="margin: 0px 0px 16px; padding: 0px; box-sizing: border-box !important; border: 0px; list-style: none; -webkit-tap-highlight-color: transparent; font-family: Arial, sans-serif; color: #24292e; font-size: 16px; font-style: normal; font-variant-ligatures: no-common-ligatures; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">我的心态从因为功能没有被完全用到而感到可惜，变成了因为收藏了这款小众设备而感到满意；这不再只是很实际的算账，而更像是一种带着感情的消费，虽然它不能接收所有的频段，但作为我随身听里的一款紧凑型 FM 收音机播放器，在散步或者通勤的时候用它正合适。</p>
<p style="margin: 0px; padding: 0px; box-sizing: border-box !important; border: 0px; list-style: none; -webkit-tap-highlight-color: transparent; font-family: Arial, sans-serif; color: #24292e; font-size: 16px; font-style: normal; font-variant-ligatures: no-common-ligatures; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">这台机器把遥远的海外广播时代变得具体。口袋里装着的不仅仅是一个设备，还是在夜市淘货的时候偶然碰到稀有型号时的那份惊喜。这种乐趣就在过程本身，就在于发现那些被主流市场忘掉的小物件，并且从里面找到属于自己的一份独特满足感。</p>
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<p style="display: none;">&nbsp;</p>
<p style="margin: 24px 0 0; padding: 12px 14px; background: #f7f8fa; border-left: 4px solid #07c160; color: #666; font-size: 14px; line-height: 1.8;">来源：<a href="https://mp.weixin.qq.com/s/dpREk4MqPw3Mb2c-O0bHPw" target="_blank" rel="noopener noreferrer">小李砖家</a></p>]]></description>
    <pubDate>Sun, 08 Nov 2026 07:22:00 +0800</pubDate>
    <dc:creator>广播发烧网</dc:creator>
    <guid>https://www.5bcl.com/jiaoliu/4869.html</guid>
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    <title>短波台子确实少了，但2026年秋天恰好是收听黄金窗口：现在还能听到什么</title>
    <link>https://www.5bcl.com/radio_news/4862.html</link>
    <description><![CDATA[<!--?xml encoding="utf-8" ?-->
<p style="margin: 0px 0px 16px; padding: 12px 16px; background: #e8f0fe; border-left: 4px solid rgb(22, 119, 255); border-radius: 4px; font-size: 15px; color: #555555;">短波台确实少了，但2026年秋分前后这两个月，恰好是一年里把收音机拿出来最划算的窗口。FreeDV3数字语音刚做了首次通联测试，7068 kHz的国庆台网点名刚结束&mdash;&mdash;短波没"废"，只是玩法从"搜台"变成了"打卡"。</p>
<h2 style="font-size: 20px; color: #1a1a1a; margin: 24px 0px 12px; padding-left: 12px; border-left: 4px solid rgb(22, 119, 255); line-height: 1.5;">短波的真实状态：少了，但没废</h2>
<p style="margin: 0px 0px 14px;">国庆假期，B站"短波"标签下并不冷清：7068 kHz LSB的台网点名刚结束，FreeDV3数字语音做了首次通联测试，有人在成都用二次变频机收下了BBC 15295 kHz，还有人把茨城八俣发射台的NHK短波信号录了档。从9月底到10月4日，光"短波"一个关键词就排出三十多条视频，收听实录占了大半。</p>
<p style="margin: 0px 0px 14px;">另一边，知乎"全波段收音机在中国已经废了吧？"浏览量两百多万。一位福建SDR玩家回答得很老实："短波十个电台至少六七个中国之声台海之音&hellip;&hellip;还能听，但是不要期望太多。"小红书上也有人翻出德生PL365问"有没有好玩的无线电频段"，攒了138个赞。</p>
<p style="margin: 0px 0px 14px;">这两个画面拼起来才是2026年短波的真实状态：台子确实在变少&mdash;&mdash;VOA和BBC中文短波早已停播，这是全球性趋势；但短波没少到"废了"。台少了，玩法已经从"搜台"变成了"打卡"。</p>
<h2 style="font-size: 20px; color: #1a1a1a; margin: 24px 0px 12px; padding-left: 12px; border-left: 4px solid rgb(22, 119, 255); line-height: 1.5;">为什么秋天这两个月值得专门拿出来讲</h2>
<p style="margin: 0px 0px 14px;">三个原因叠在一起，构成了短波收听的"秋分窗口"：</p>
<ul style="padding-left: 20px; margin: 0px 0px 14px;">
<li style="margin-bottom: 8px;"><strong>电离层的"半年异常"：每年春分、秋分前后，电离层电子含量在南北半球同时抬升，远距离天波传播出现全年最佳的条件。DX玩家管这叫分点季，一年就这两个窗口，秋天这个正在进行。</strong></li>
</ul>
<ul style="padding-left: 20px; margin: 0px 0px 14px;">
<li style="margin-bottom: 8px;"><strong>大气底噪下降：夏季雷暴带来的天电干扰（QRN）退场，入秋后信号显得更干净。越往秋冬越有东西听，是老玩家的普遍体感。</strong></li>
</ul>
<ul style="padding-left: 20px; margin: 0px 0px 14px;">
<li style="margin-bottom: 8px;"><strong>波段时段对上了：太阳第25活动周已于2024年前后见顶，目前处于下降期。高波段白天"奇迹"变少，但25/19/16米白天到傍晚依旧稳定，49/41米夜间跑远程。口诀："14M全天候都有传播，7M北方地区比南方地区传播好。"</strong></li>
</ul>
<p style="margin: 0px 0px 14px;">一个可执行的作息：清晨和黄昏（本地日出日落前后）是远程信号最容易冒出来的"灰线时段"；白天扫25-19米；晚上9点后往31/41/49米守外台和低波段通联。整点前后花两分钟收一下BPM的10000 kHz，是性价比最高的"入门打卡"。</p>
<h2 style="font-size: 20px; color: #1a1a1a; margin: 24px 0px 12px; padding-left: 12px; border-left: 4px solid rgb(22, 119, 255); line-height: 1.5;">2026年秋天还能听到什么</h2>
<p style="margin: 0px 0px 14px;">把近期各平台玩家晒出来的真实收听记录放在一起看（都带频率、带时间、带地点），短波波段上活着的东西分四类：</p>
<table style="width: 100%; border-collapse: collapse; margin: 12px 0px 16px; font-size: 14px;">
<thead>
<tr>
<th style="background: #1677ff; color: #ffffff; padding: 8px 10px; text-align: left; border: 1px solid rgb(22, 119, 255);">
<section>类别</section>
</th>
<th style="background: #1677ff; color: #ffffff; padding: 8px 10px; text-align: left; border: 1px solid rgb(22, 119, 255);">
<section>实录频率/内容</section>
</th>
</tr>
</thead>
<tbody>
<tr>
<td style="padding: 8px 10px; border: 1px solid rgb(221, 221, 221);">
<section>中央与本地主力台</section>
</td>
<td style="padding: 8px 10px; border: 1px solid rgb(221, 221, 221);">
<section>中国之声多频点覆盖；CRI华语13590、11905；6190冬夜可收；13810早间8:40</section>
</td>
</tr>
<tr>
<td style="padding: 8px 10px; border: 1px solid rgb(221, 221, 221); background: #f9f9f9;">
<section>境外幸存台</section>
</td>
<td style="padding: 8px 10px; border: 1px solid rgb(221, 221, 221); background: #f9f9f9;">
<section>NHK华语9690（八俣发射台）；朝鲜之声9445、6400；泰国之声9385；BBC 15295</section>
</td>
</tr>
<tr>
<td style="padding: 8px 10px; border: 1px solid rgb(221, 221, 221);">
<section>信号台/授时</section>
</td>
<td style="padding: 8px 10px; border: 1px solid rgb(221, 221, 221);">
<section>BPM标准时间信号10000、15000 kHz</section>
</td>
</tr>
<tr>
<td style="padding: 8px 10px; border: 1px solid rgb(221, 221, 221); background: #f9f9f9;">
<section>通联与数字模式</section>
</td>
<td style="padding: 8px 10px; border: 1px solid rgb(221, 221, 221); background: #f9f9f9;">
<section>7068 LSB国庆台网点名；14.270 USB通联；FT8；FreeDV3首次测试</section>
</td>
</tr>
</tbody>
</table>
<p style="margin: 0px 0px 14px;">缩水也是真的。北京玩家感叹"短波好久才遇到几个台，都用不着转频率了"。美国之音被评论区总结为"可惜给废了"，北美方向如今"99%都是宗教节目"。所以给新买机器的人一个准确预期：别按80年代"一转一个台"的图景来想象今天；但按"打卡"的思路，短波反而比想象中耐玩。</p>
<h2 style="font-size: 20px; color: #1a1a1a; margin: 24px 0px 12px; padding-left: 12px; border-left: 4px solid rgb(22, 119, 255); line-height: 1.5;">四条入门路线：从0元到进阶</h2>
<h3 style="font-size: 17px; color: #1a1a1a; margin: 18px 0px 10px;">路线A：0元，先在线听</h3>
<p style="margin: 0px 0px 14px;">B站2017年那条"不需要买短波收音机，也不需要安装APP，用这个方法手机电脑就可以收听短波"至今攒了11.9万播放、2646收藏，评论区到2026年还有人挖。核心是荷兰特文特大学WebSDR这类在线接收站：你人在卧室，接收端在信号环境好的远郊甚至国外。买机器之前，先用它把中国之声、CRI、NHK这些还在播的频率"点验"一遍，确认你对这些声音还有耐心，再谈花钱。</p>
<h3 style="font-size: 17px; color: #1a1a1a; margin: 18px 0px 10px;">路线B：百元内，小机器验证兴趣</h3>
<p style="margin: 0px 0px 14px;">短波入门的门槛比很多人以为的低。石家庄有用户拿"四六级考试机"龙飞LF310，在滹沱河边就收到了朝鲜电台9445。这个档位的合理预期是：中国之声加一两个幸存台，拉杆天线尽量拉直、贴着窗户站。够用就升级，不够用也不亏。</p>
<h3 style="font-size: 17px; color: #1a1a1a; margin: 18px 0px 10px;">路线C：主流档（400-900元），认准SSB再下单</h3>
<p style="margin: 0px 0px 14px;">海外评测人凯文2025年的"十大便携式短波收音机榜单"值得当参考：德生PL330卖79.98美元、信怀德D-808卖108美元、科多笙DX-286卖79.99美元、山进909X2卖311.86美元、德生PL990卖269美元。除了孔雀石DSP2，"有一个算一个，都是我们国内工程师研发设计、国内工厂生产的"&mdash;&mdash;国产收音机在全球短波机市场实打实霸榜。</p>
<p style="margin: 0px 0px 14px; padding: 10px 14px; background: #fff3e0; border-left: 4px solid rgb(255, 152, 0); border-radius: 4px; font-size: 14px; color: #666666;"><strong>硬杠</strong>：想收通联和台网，必须带单边带（SSB/LSB/USB）。不带SSB的机器，在7068、14.270这些频率上只能听到一片沉默。PL330是公认的最小体积带SSB方案。</p>
<h3 style="font-size: 17px; color: #1a1a1a; margin: 18px 0px 10px;">路线D：进阶，钱花在环境和天线上</h3>
<p style="margin: 0px 0px 14px;">今年9-10月的实录集中出现了一批"天线党"：山东用户用国产YouLoop环天线加LNA、SDR++收茨城八俣；广州玩家把科多笙QPR-001拆了拉杆天线改SMA座，阳台上收到14.270的通联。一句话：收不到、收不清，先动天线和位置，再动预算换旗舰。底噪和电磁环境，不是收音机本身，才是你短波收听体验的天花板。</p>
<h2 style="font-size: 20px; color: #1a1a1a; margin: 24px 0px 12px; padding-left: 12px; border-left: 4px solid rgb(22, 119, 255); line-height: 1.5;">四个掏钱前要绕开的坑</h2>
<p><strong>&nbsp; &nbsp; &nbsp; 1、为"收外台"买旗舰：幸存外台多为英日韩俄语言，听不懂的语言会迅速消耗热情。先在WebSDR上确认自己真的想听什么，再定预算。</strong></p>
<p><strong>2、</strong><strong>用90年代的图景预期2026年：短波广播自90年代互联网普及后全球性收缩，VOA/BBC中文短波早已停播。这是趋势，不是你家收音机的问题。</strong> <strong>3、只在室内拧旋钮就判机器死刑：拉开位置、接根临时线，结论往往重写。天线和电磁环境才是天花板。</strong> <strong>4、</strong><strong>三分钟热度：解法不是买更贵的机器，而是把收听做成两个固定打卡&mdash;&mdash;整点的BPM时间信号，周末傍晚的通联频率。秋分窗口只有两个月，它自带deadline，恰好治拖延。</strong></p>
<h2 style="font-size: 20px; color: #1a1a1a; margin: 24px 0px 12px; padding-left: 12px; border-left: 4px solid rgb(22, 119, 255); line-height: 1.5;">值得关注的新动向</h2>
<p style="margin: 0px 0px 14px;">FreeDV3数字语音从10月3日首次通联测试之后，会不会在通联频率上铺开，是接下来几个月值得盯的事。这类数字模式占用带宽极窄，音质却远超传统SSB&mdash;&mdash;如果推广开来，短波通联的体验会有质的变化。</p>
<p style="margin: 0px 0px 14px;">另一个信号来自政策端：9月15日，美国众议院以压倒性票数通过了"为每辆车配备调幅广播法案"，特斯拉、宝马这类正在砍收音机的车企，要把AM调幅广播装回新车了。电磁波"随时在线、不依赖网络"的价值，全世界都在重新评估。</p>
<p style="margin: 0px 0px 14px;">所以那台收音机先别挂闲鱼。这个分点季，把它从抽屉里拿出来：整点收一下10000 kHz的嘀嗒声，黄昏扫一圈19米。评论区报个到&mdash;&mdash;你最近一次收到的是哪个频率？</p>
<p style="display: none;">&nbsp;</p>
<p style="margin: 24px 0 0; padding: 12px 14px; background: #f7f8fa; border-left: 4px solid #07c160; color: #666; font-size: 14px; line-height: 1.8;">来源：<a href="https://mp.weixin.qq.com/s/XVYSCERt2MzhIF0u-GAK9Q" target="_blank" rel="noopener noreferrer">无线电研习社</a></p>]]></description>
    <pubDate>Fri, 06 Nov 2026 18:10:00 +0800</pubDate>
    <dc:creator>广播发烧网</dc:creator>
    <guid>https://www.5bcl.com/radio_news/4862.html</guid>
</item>
<item>
    <title>RT-880X：又一款6686芯片的收音机</title>
    <link>https://www.5bcl.com/jiaoliu/4856.html</link>
    <description><![CDATA[<!--?xml encoding="utf-8" ?-->
<p style="text-align: center; line-height: 2em;"><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">作者：丹&middot;罗宾逊</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">今年早</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">些时候，Elecevolve 厂商联系了我。这家厂商推出过一款独特的</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">小孔雀石</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">880</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">收音机</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">，在我看来，它是近些年来表现最出色的便携</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">式收音机</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">，当时他们向我介绍了另一款计划发布的机型：RT</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">-</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">880X。</span></span></span></p>
<p style="line-height: 2em;"><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/2766cf7f00c50542ad2db8928f76689e.jpeg"></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">寄到我手上的这台测试样机机身标注名称为&ldquo;Rayture&rdquo;，这个名字我此前</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">并不熟悉。不少爱好者也留意到，它和大家已经熟知的DP</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">-</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">666外观很像，这款DP</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">-</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">666以Deepelec品牌发售，有横版、竖版两种款式，本文撰稿时亚马逊标价139美元。</span></span></span></p>
<p style="line-height: 2em;"><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/c5ceab10d3b2b47ca736cd92a3503f10.png"></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">从上面这张</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">图片</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">可以看到，880X的主打卖点包括：高灵敏度</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">多波段彩屏、&ldquo;DX 扫描&rdquo;、RD</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">S</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">、</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">可切换的</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">中波</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">磁棒</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">天线/</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">与</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">SMA天线输入、航空波段、自动</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">搜索</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">与存储</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">电台</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">功能，可保存198个电台。机身外壳看起来是金属材质，但也有可能采用的是近几年国内不少机型上见过的PC板方案。电池规格</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">为</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">3.7伏/ 5000毫安时，容量相当可观。不过我还没有做完整的续航测试，也没有拆机，所以不确定替代电池是否容易买到，猜想在速卖通这类平台应该可以找到。</span></span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">机身顶部配有SMA天线</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">插口</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">，还有静噪、音量、调谐三个旋钮。调谐、静噪等旋钮的转向可以在菜单内部修改。修改旋钮转向的操作</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">方法为</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">：开机时按住带宽按键，这只是该方式下可启用的功能之一。机身左侧是常见的标准耳机</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">插口</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">；右侧依次是</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">电源开关、5V/1A充电口、充电指示灯，还有大家熟悉的ESP32启动按键。</span></span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">880X的性能表现和其他</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">基</span></span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">于6686芯片的收音机</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">大体一致：调幅、调频接收效果优秀，RDS解码灵敏度很高，屏幕显示效果出色。我个人更偏爱顶部旋钮操控而非侧边按键，从这点来说880X的握持操控体验很不错。长波波段基本没有实用价值。我还没有拆开外壳，所以无法确认内置磁棒</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">天线</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">的安装位置，或许已经入手该机的爱好者可以补充这方面信息。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">遗憾的是，它的航空波段接收表现达不到我的预期。我的Radtel 950Pro</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">（</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">国内厦门厂商锐德泰的产品，主销国外市场&mdash;&mdash;</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">译者注</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">）</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">配上名古屋</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">拉杆</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">天线，哪怕天线没有拉出，接收效果都要好得多。我用来衡量航空、应急通信频段接收能力的标杆机是AOR AR</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">-</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">3000A，这台机子放在厨房，只用</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">较短的拉杆</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">天线，就能收下华盛顿特区、巴尔的摩以及弗吉尼亚州一带几乎所有信号；而880X放在家里大致</span></span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">相同的位置，接收起来就很吃力。</span></span></p>
<p style="line-height: 2em;"><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/3a1d63dfbc1d5593a5c12d6e465decf6.png"></span><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><br></span></p>
<p style="line-height: 2em;"><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">▲锐德泰950 Pro手持宽频接收/对讲机</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">880X的出厂配件是常规配置：做工不错的皮质收纳袋、底座品质很好的SMA拉杆天线，还有一根USB</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">-</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">C数据线。包装内没有纸质说明书，可以在Elecevolve官网</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">的</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">该机商品页下载，该页面目前仍标注为预售状态。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">我还没有尝试刷固件，不过相信其他拿到样机、熟悉PE5PVB开源项目的爱好者会分享升级的体验。固件升级本身存在风险。Elecevolve 的产品页面附带STMCube工具的下载链接，这个工具上手之后其实很好操作。之前我就用STMCube给</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">小孔雀石</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">880升级，替代官方直刷页面，全程没有出现问题。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">880X的菜单设置项非常丰富，我就不逐一罗列了，感兴趣的朋友可以直接访问Elecevolve的产品页面查看。其中包含一个复古调频显示界面，这种界面最早出现在俄罗斯设计生产的初代DSP接收机上，后来很多国内厂商也沿用了这套显示样式。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">我的总结如下：自从最早出现</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">科多苼</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">286之后，采用TEF6686芯片的</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">收音机</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">已经遍地开花；</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">科多苼</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">286至今仍是追求优秀调幅、调频性能用户的优选。论便携体积，很少有机型能胜过286；但如果你想要一块观感出色的彩屏，RT</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">-</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">880X就是很不错的选择，DP</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">-</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">666</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">等采用6686芯片的收音机</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">同样值得考虑。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">关于厂商宣传的 &ldquo;抗干扰能力升级&rdquo;，我很难判断具体提升在哪里。这台机子的抗扰水平和其他</span></span><span style="font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">基于TEF6686芯片的收音机</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">处于同一水准，如果厂商是说它内置了我们尚未知晓的特殊电路&hellip;&hellip;那目前只能先存疑，等待更多实测信息。另外一个短波相关的槽点：</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">一部分此类</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">机型短波最高只到27MHz，直接砍掉了民用对讲机频段，这点非常让人困扰，</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">小孔雀石</span></span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">880就没有这个问题。</span></span></span></p>
<p style="line-height: 2em;"><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/53e3a1da9b626fe8a3f3529c2b84e80b.png"></span></p>
<p style="line-height: 2em;"><span style="font-size: 14pt; font-family: Calibri; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">▲小孔雀石880</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">880x在当下市场面临的竞争，来自ESP</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">-</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">138/D这类支持单边带的双芯片便携机。但这批搭载47xxx芯片的双芯片机型有个通病：自动增益控制表现糟糕。我几年前入手的ESP</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">-</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">138，在用47xxx芯片接收时体验很差，基本只能切到手动增益，还会出现恼人的&ldquo;噗噗爆音&rdquo;。最近上市的</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">朝元</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">LC</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">-</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">100也是同样的情况，它同时搭载47xxx与</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">6686</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">两套方案，也没能避开这个问题。一个很现实的现状：到目前为止，</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">6686芯片</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">依然不支持</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">单边带</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">接收。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">对于想要兼顾优质单边带、中波与调频接收效果的收听爱好者，德生依旧是很有吸引力的选择。我们也拭目以待，看看山进新款ATS</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">-</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">909X2上市到用户手上之后，相比老款能有多大提升。我依旧坚持我的看法：</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">小孔雀石</span></span><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">880凭借独特的频谱主界面，覆盖航空波段、气象、调频、中波、短波，只要你愿意花时间吃透繁多的按键与菜单选项，它依旧是目前最好的选择。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">感谢Elecevolve寄来这台880X样机。厂商没有干预我本次评测的观点，也期待SWLing网站读者的留言讨论。我暂时不清楚机身&ldquo;Rayture&rdquo;这个名称的含义，或许后续会有相关说明。</span></span></p>
<p style="text-indent: 28pt; line-height: 2em;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="text-indent: 28pt; line-height: 2em; font-size: 14pt; font-family: 宋体; font-variant: normal; text-transform: none;"><span style="letter-spacing: 2px;">来源：swling</span></span></span></p>
<p style="display: none;">&nbsp;</p>
<p style="margin: 24px 0 0; padding: 12px 14px; background: #f7f8fa; border-left: 4px solid #07c160; color: #666; font-size: 14px; line-height: 1.8;">来源：<a href="https://mp.weixin.qq.com/s/_sWBaMIXssGaFRDGkNbzEA" target="_blank" rel="noopener noreferrer">收音机评论译介</a></p>]]></description>
    <pubDate>Fri, 06 Nov 2026 18:00:00 +0800</pubDate>
    <dc:creator>广播发烧网</dc:creator>
    <guid>https://www.5bcl.com/jiaoliu/4856.html</guid>
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    <title>冷门真香！十年前索尼外销机，如今百元就能捡漏</title>
    <link>https://www.5bcl.com/jiaoliu/4858.html</link>
    <description><![CDATA[<!--?xml encoding="utf-8" ?-->
<section>夜市闲逛的时候，在老数码摊一眼撞见这台索尼 XDR‑P1DBP，问完价一百二十九，犹豫片刻还是收下了。</section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/8ab17b217611d91cb6b59a0db5d5540d.jpeg"></section>
<section></section>
<section>它是索尼在2015年面向欧洲推出的便携口袋收音机，国内没有正式发售的版本，属于当年专门为DAB数字广播做的机型，整机中国制造，却只供给海外市场，这种错位的机子，本身就带着一点独特的味道。<br><br><br></section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/eb820b8c14a81ce795782a734695e4d3.jpeg"></section>
<section>拿到手上第一感觉就是小巧，方正的机身不算厚重，正面一大片蜂窝网罩，内置喇叭藏在里面，右边集中排布着全部操作按键，MENU、自动搜台、预设确认，还有一枚用来切换 DAB 和 FM 的按键，布局干净利落，没有多余的装饰。拉出伸缩拉杆天线，长度足够，收起来之后又能贴紧机身，揣进外套口袋毫无压力。</section>
<section></section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/69a546ce7968ecd5a5c3174857c447ef.jpeg"></section>
<section>屏幕是小小的橙背光液晶屏，可以显示频率、时间，开启RDS之后，还能读出电台附带的文字信息，在当年算是很实用的配置。<br><br><br></section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/b6b6d6102ffdbd2e3a5b9f9f6dc58419.jpeg"></section>
<section>开机先切到 FM，这点也是它在国内最有价值的地方，调频覆盖 87.5&ndash;108MHz，正好贴合国内国频，步进合适，本地的调频电台大多都能稳稳锁住，信号好的时候，自带的小喇叭声音通透，底噪控制得不错，音量调节手感顺滑，侧边还有独立的3.5毫米耳机孔，安静的时候戴上耳机收听，又是另一种感受。</section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/1421253ea3e5cb947ccabd5d4e1914a3.jpeg"></section>
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<section>可惜机身上显眼的 DAB、DAB+ 标识，在这边基本只能当作装饰，它采用欧洲标准的 Band‑III 频段，国内没有配套的地面数字广播，这个功能相当于直接闲置，而且这台机器本身不包含中波与短波，除去数字广播，就只剩调频可以用，算是它绕不开的局限。<br><br><br></section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/e1cf853b3d52f161f991d20e1e20d7cc.jpeg"></section>
<section>供电是内置锂电池，Micro‑USB 接口充电，输入规格 DC 5V 0.5A，现在随手找一根旧安卓线就能充，不用像很多老收音机那样到处找适配电池。</section>
<section></section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/81559dfbf772817d57fb24a7320ab296.jpeg"></section>
<section>机身侧面预留了三个快捷预设键，平时常听的调频台可以直接存进去，一键跳转，外出随手调频很省心，还有锁键开关，放兜里不容易误触。<br><br></section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/904cabfac2abdf1750cdf58a058a2498.jpeg"></section>
<section><br>细看机身，能看出岁月留下的痕迹，外壳表面有一些细微的划痕，是前任主人长期携带留下的印记，不过网罩没有锈蚀，按键、旋钮没有松垮，所有功能都可以正常响应，没有暗病。对于一台欧版小众随身机来说，能保持这样的状态已经很难得。<br><br><br></section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/d41138229b850d766ce99368803b3bb6.jpeg"></section>
<section>很多人会觉得，花一百多收一台只能听FM的海外收音机并不划算，毕竟同价位有很多全新机型可选。但玩老数码，很多时候看重的不只是收音性能。它带着一套成熟完整的 DAB 系统设计，是那个数字广播尝试普及年代里留下来的实物样本，橙屏亮起、自动搜台缓缓滚动频率的时候，那种独属于老索尼的仪式感，是普通收音机很难给到的。<br><br><br></section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/37894e3016484893eb8e134114b65dab.jpeg"></section>
<section>它没法接收短波，也用不了数字广播，算不上全能，更适合作为随身调频小机，散步或者通勤的时候，拉出来听一听本地电台。</section>
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<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/1b08932409ee0f577c4cd593527502fc.jpeg"></section>
<section>比起追求强大的接收性能，这台机子更适合喜欢收集小众索尼随身设备的人。夜市淘机的乐趣也就在这里，不知道什么时候就能遇上一台当年外销、国内少见的机型，把一段遥远的广播时代，揣进自己口袋里。</section>
<p style="display: none;">&nbsp;</p>
<p style="margin: 24px 0 0; padding: 12px 14px; background: #f7f8fa; border-left: 4px solid #07c160; color: #666; font-size: 14px; line-height: 1.8;">来源：<a href="https://mp.weixin.qq.com/s/j3XReBQlj5NXrQnxLFWDGg" target="_blank" rel="noopener noreferrer">科技狂简</a></p>]]></description>
    <pubDate>Fri, 06 Nov 2026 11:29:58 +0800</pubDate>
    <dc:creator>广播发烧网</dc:creator>
    <guid>https://www.5bcl.com/jiaoliu/4858.html</guid>
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    <title>11月6日｜他发明了FM，却没等到FM的时代</title>
    <link>https://www.5bcl.com/story/4857.html</link>
    <description><![CDATA[<!--?xml encoding="utf-8" ?-->
<p style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; margin: 0px 0px 16px; caret-color: #222222; color: #222222; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;">1935年11月的一个夜晚，纽约帝国大厦的一间会议室里，一群无线电工程师围着一台收音机。台上的工程师把旋钮从一片AM频道里拨开，停在一个"死寂"的频率上，然后，一束来自17英里外、清晰得不像电器的声音响了起来&mdash;&mdash;有人倒了一杯水，那水声就像真的水声；有人撕了张纸，撕裂声不像森林大火的噼啪。这一夜，无线电的"静电时代"开始松动。</p>
<figure style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; margin: 24px 0px; text-align: center; caret-color: #222222; color: #222222; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/7a1914111be1057162085c554e2c10c3.png" alt="图 1 阿姆斯特朗与调频波">
<figcaption style="font-size: 14px; color: #666666; margin-top: 10px;">图 1 阿姆斯特朗与调频波</figcaption>
</figure>
<h2 style="font-style: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; font-size: 21px; font-weight: bold; margin: 30px 0px 14px; color: #001a3f; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;">一、历史上的今天，发生了十件事</h2>
<section style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; caret-color: #222222; color: #222222; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;">
<p style="margin: 0px 0px 11px; padding-left: 30px; text-indent: -30px; line-height: 1.85;"><span style="font-weight: bold; color: #001a3f;">1.</span>1860年 &mdash; 亚伯拉罕&middot;林肯当选美国第16任总统。</p>
<p style="margin: 0px 0px 11px; padding-left: 30px; text-indent: -30px; line-height: 1.85;"><span style="font-weight: bold; color: #001a3f;">2.</span>1869年 &mdash; 新泽西，第一场大学橄榄球赛（罗格斯对普林斯顿）开踢。</p>
<p style="margin: 0px 0px 11px; padding-left: 30px; text-indent: -30px; line-height: 1.85;"><span style="font-weight: bold; color: #001a3f;">3.</span>1900年 &mdash; 麦金莱连任美国总统，击败布莱恩。</p>
<p style="margin: 0px 0px 11px; padding-left: 30px; text-indent: -30px; line-height: 1.85;"><span style="font-weight: bold; color: #001a3f;">4.</span>1928年 &mdash; 赫伯特&middot;胡佛在大选中大胜，当选总统。</p>
<p style="margin: 0px 0px 11px; padding-left: 30px; text-indent: -30px; line-height: 1.85;"><span style="font-weight: bold; color: #001a3f;"><span style="font-weight: bold;">5.</span></span><span style="font-weight: bold;">1935年 &mdash; 阿姆斯特朗在纽约向无线电工程师学会演示调频（FM）广播。</span></p>
<p style="margin: 0px 0px 11px; padding-left: 30px; text-indent: -30px; line-height: 1.85;"><span style="font-weight: bold; color: #001a3f;">6.</span>1944年 &mdash; 汉福德工厂首次生产出钚，后来用于投在长崎的"胖子"原子弹。</p>
<p style="margin: 0px 0px 11px; padding-left: 30px; text-indent: -30px; line-height: 1.85;"><span style="font-weight: bold; color: #001a3f;">7.</span>1947年 &mdash; 《Meet the Press》电视节目首播，成为史上最长寿的新闻访谈节目。</p>
<p style="margin: 0px 0px 11px; padding-left: 30px; text-indent: -30px; line-height: 1.85;"><span style="font-weight: bold; color: #001a3f;">8.</span>1962年 &mdash; 联合国大会通过决议，谴责南非种族隔离政策。</p>
<p style="margin: 0px 0px 11px; padding-left: 30px; text-indent: -30px; line-height: 1.85;"><span style="font-weight: bold; color: #001a3f;">9.</span>1971年 &mdash; 阿雷西博射电望远镜正式启用，当时是世界最大的射电望远镜。</p>
<p style="margin: 0px 0px 11px; padding-left: 30px; text-indent: -30px; line-height: 1.85;"><span style="font-weight: bold; color: #001a3f;">10.</span>1973年 &mdash; 先驱者10号探测器开始拍摄木星。</p>
</section>
<p style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; margin: 0px 0px 16px; caret-color: #222222; color: #222222; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;">其中第 5 件，藏着一段把"噪音"从无线电里驱逐出去的故事。</p>
<h2 style="font-style: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; font-size: 21px; font-weight: bold; margin: 30px 0px 14px; color: #001a3f; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;">二、1935：阿姆斯特朗把"噪音"请下了广播</h2>
<p style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; margin: 0px 0px 16px; caret-color: #222222; color: #222222; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;">Edwin Armstrong 是典型的"工程师里的工程师"。他不是第一个想到调频的人，却是第一个把整套系统&mdash;&mdash;从发射机到接收机&mdash;&mdash;都按调频重做一遍的人。当时的广播全是调幅（AM）：声音的大小，被"刻"在电波振幅的高低上。麻烦也恰恰出在这儿&mdash;&mdash;闪电、电器火花、电离层起伏，这些干扰统统表现为"振幅上的起伏"。信息藏在振幅里，噪音也藏在振幅里，两者根本分不清。AM 收音机里那永不停歇的"嘶嘶"声，就是这么来的。</p>
<p style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; margin: 0px 0px 16px; caret-color: #222222; color: #222222; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;">阿姆斯特朗的赌注反直觉：既然噪音偏爱振幅，那就别把信息放在振幅上。他把声音"挂"到载波的瞬时频率上&mdash;&mdash;声音大，频率就偏高一点；声音小，频率就偏低一点；振幅则恒定不变。这样一来，哪怕天空照样电闪雷鸣，只要接收机只盯着"频率偏了多少"来解调，那些加在振幅上的干扰就被自动甩开了。</p>
<p style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; margin: 0px 0px 16px; caret-color: #222222; color: #222222; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;">为了证明这不是纸上谈兵，1933年他拿到四项调频专利；1935年11月5日前后（史料多记作11月6日），他在帝国大厦的工程师聚会上公开演示：17英里外、纽约扬克斯的业余电台 W2AG 用2.5米波段发来调频信号，会议室那台收音机先是一片死寂，接着传出的，是倒水声、撕纸声、苏萨的进行曲&mdash;&mdash;清楚得让在场所有人吃惊。</p>
<figure style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; margin: 24px 0px; text-align: center; caret-color: #222222; color: #222222; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/6da039b909f454a1d630c2f0f2e008fe.png" alt="图 2 帝国大厦的演示">
<figcaption style="font-size: 14px; color: #666666; margin-top: 10px;">图 2 帝国大厦的演示</figcaption>
</figure>
<p style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; margin: 0px 0px 16px; caret-color: #222222; color: #222222; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;">故事的后半段并不顺。彼时的广播霸主 RCA 满脑子都是 AM 专利和正在烧钱的电视，没人想再为一套"新系统"买单。美国联邦通信委员会（FCC）直到1940年才批准 FM 广播，二战又把建台拖到1946年。阿姆斯特朗与老友、RCA 的萨尔诺夫反目，缠斗十多年的专利诉讼，最终在1954年以他跳楼离世收场。他没能活着看到 FM 的胜利&mdash;&mdash;到1980年代，FM 听众已远超 AM。</p>
<h2 style="font-style: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; font-size: 21px; font-weight: bold; margin: 30px 0px 14px; color: #001a3f; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;">三、从调幅到调频：信息到底该"挂"在载波的哪一处？</h2>
<p style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; margin: 0px 0px 16px; caret-color: #222222; color: #222222; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;">阿姆斯特朗的胜负手，其实是个朴素的工程判断：信息放哪里，就受哪里的干扰。</p>
<p style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; margin: 0px 0px 16px; caret-color: #222222; color: #222222; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;">AM 把信息放在振幅上，于是它怕一切"幅度噪声"；FM 把信息放在频率上，于是它只对"频率噪声"敏感，而自然界里能盖过信号的频率漂移少得多。代价是带宽&mdash;&mdash;FM 要占更宽的一段频谱，才能把信噪比换来。这就是为什么早年理论家断言"窄带调频必死"，而阿姆斯特朗偏证明：把带宽放宽，噪音反而被稀释了。</p>
<figure style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; margin: 24px 0px; text-align: center; caret-color: #222222; color: #222222; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/d79e69c0f4643f51375b13e27b6c3484.png" alt="图 3 调幅与调频的较量">
<figcaption style="font-size: 14px; color: #666666; margin-top: 10px;">图 3 调幅与调频的较量</figcaption>
</figure>
<p style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; margin: 0px 0px 16px; caret-color: #222222; color: #222222; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;">这套"用带宽换信噪比"的底层逻辑，今天一点没过时。5G、Wi-Fi、雷达、卫星通信，本质上都在做同一件事：把信息以某种方式调制到载波上，再在接收端把它从噪音里拣出来。区别只是，现代调制早已从模拟的 AM/FM，走到了复杂的数字矢量调制（QAM、OFDM、QPSK&hellip;&hellip;），但"信息放哪、怎么放、怎么量得准"这三个问题，依然是所有无线通信的第一性问题。</p>
<h2 style="font-style: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; font-size: 21px; font-weight: bold; margin: 30px 0px 14px; color: #001a3f; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;">四、今天，我们怎么给一个调制信号"体检"</h2>
<p style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; margin: 0px 0px 16px; caret-color: #222222; color: #222222; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;">阿姆斯特朗当年靠一台收音机和人耳判断"清不清楚"。今天这件事已经被量化成可测量、可追溯的指标。罗德与施瓦茨做的事，就是造出把"信号质量"测到骨子里的仪器。</p>
<p style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; margin: 0px 0px 16px; caret-color: #222222; color: #222222; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;"><strong style="font-weight: bold; color: #001a3f;">先把信号"造"出来：信号发生器。</strong>要测一台接收机，得先有个标准、干净、可控的信号源。R&amp;S&reg;SMW200A 矢量信号发生器覆盖最高 67 GHz，内部基带调制带宽达 2 GHz，原生支持 AM、FM、&Phi;M 等模拟调制，也能直接生成 5G、Wi-Fi、卫星、雷达用的复杂矢量信号，还能叠加衰落、多径和干扰场景。若只追求"最纯净的模拟信号"，R&amp;S&reg;SMA100B 微波信号发生器（同样到 67 GHz）以极低的相位噪声著称，它对付的正是阿姆斯特朗当年想消灭、却以另一种形态回来的"本底噪音"。</p>
<p style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; margin: 0px 0px 16px; caret-color: #222222; color: #222222; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;"><strong style="font-weight: bold; color: #001a3f;">再把信号"读"出来：信号与频谱分析仪。</strong>发出来的信号到底"长什么样"，靠 R&amp;S&reg;FSW 信号与频谱分析仪来拆解。配合 FSW-K7 模拟调制分析选件，它能直接解调 AM/FM/&Phi;M，把频偏、调幅度、SINAD、THD、占用带宽、音频频谱这些量一条条拉出来&mdash;&mdash;换句话说，阿姆斯特朗当年靠耳朵听的"清不清楚"，今天变成了屏幕上的一组标定数值。FSW 自身相位噪声低至约 -140 dBc(1 Hz)@10 kHz 偏移，意味着它读得懂极微弱的信号细节。</p>
<p style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; margin: 0px 0px 16px; caret-color: #222222; color: #222222; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;"><strong style="font-weight: bold; color: #001a3f;">最现代的"静电"：相位噪声。</strong>如果说阿姆斯特朗那个年代的敌人是 AM 收音机里的"嘶嘶"声，那今天高频系统（雷达本振、原子钟、高速串行时钟）的敌人，是藏在载波相位里的微小抖动&mdash;&mdash;相位噪声。R&amp;S&reg;FSWP 相位噪声分析仪专干这件事，把本振的近载相噪一条曲线画出来，看它够不够"纯"。信号越"纯"，系统误码越低、测距越准、成像越干净。</p>
<figure style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; margin: 24px 0px; text-align: center; caret-color: #222222; color: #222222; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/d9692af9f18c173a3e1d30a69b3bcc2c.png" alt="图 4 信号源与频谱仪">
<figcaption style="font-size: 14px; color: #666666; margin-top: 10px;">图 4 信号源与频谱仪</figcaption>
</figure>
<p style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; margin: 0px 0px 16px; caret-color: #222222; color: #222222; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;">从帝国大厦那台静默后骤然清晰的收音机，到今天实验室里皮秒级的群时延与 dBc 级的相位噪声曲线，手段换了，那句老话没换：<strong style="font-weight: bold; color: #001a3f;">你没法改善一个你测不准的信号。</strong></p>
<h2 style="font-style: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; font-size: 21px; font-weight: bold; margin: 30px 0px 14px; color: #001a3f; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;">五、写在最后</h2>
<p style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; margin: 0px 0px 16px; caret-color: #222222; color: #222222; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;">阿姆斯特朗没能活着等到 FM 的时代，但他把一个朴素真理钉进了无线电史：噪音不是无线电的宿命，只是当时还没找对"放信息的地方"。九十年过去，我们仍在和噪音谈判&mdash;&mdash;只是谈判的桌子，从帝国大厦的会议室，搬到了每一间测试实验室。</p>
<p style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; margin: 0px 0px 16px; caret-color: #222222; color: #222222; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;">浪漫归浪漫，硬核归硬核。每一次清晰通话、每一帧稳定画面背后，都有人先把这个信号"测准了"。</p>
<section style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; text-decoration-thickness: auto; text-decoration-style: solid; margin-top: 34px; border-top: 1px solid rgb(238, 238, 238); padding-top: 22px; caret-color: #222222; color: #222222; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: #ffffff;">
<h3 style="font-size: 18px; font-weight: bold; margin: 22px 0px 12px; color: #001a3f;">一、历史事件</h3>
<p>1. Edwin Armstrong demonstrates FM radio (1935) &mdash; Encyclopedia.com</p>
<p>来源：Encyclopaedia Britannica / Encyclopedia.com</p>
<p>https://www.encyclopedia.com/media/encyclopedias-almanacs-transcripts-and-maps/armstrong-edwin-howard-1890-1954</p>
<p>2. November 6 &mdash; On This Day（FM 广播问世）</p>
<p>来源：KOAM News Now</p>
<p>https://www.koamnewsnow.com/on-this-day-november-6/</p>
<p>3. Armstrong Demonstrates FM Radio Broadcasting &mdash; EBSCO Research Starter</p>
<p>来源：EBSCO</p>
<p>https://ebsco.com/research-starters/history/armstrong-demonstrates-fm-radio-broadcasting/</p>
<h3 style="font-size: 18px; font-weight: bold; margin: 22px 0px 12px; color: #001a3f;">二、R&amp;S 技术</h3>
<p>1. R&amp;S&reg;SMW200A Vector Signal Generator</p>
<p>来源：R&amp;S 官网</p>
<p>https://www.rohde-schwarz.com.cn/products/test-and-measurement/vector-signal-generators/r-s-smw200a-vector-signal-generator_63493-38666.html</p>
<p>2. R&amp;S&reg;SMA100B RF and Microwave Signal Generator</p>
<p>来源：R&amp;S 官网</p>
<p>https://www.rohde-schwarz.com.cn/products/test-and-measurement/analog-signal-generators/rs-sma100b-rf-and-microwave-signal-generator_63493-427776.html</p>
<p>3. R&amp;S&reg;FSW Signal and Spectrum Analyzer</p>
<p>来源：R&amp;S 官网</p>
<p>https://www.rohde-schwarz.com/us/it/products/test-and-measurement/benchtop-analyzers/rs-fsw-signal-and-spectrum-analyzer_63493-11793.html</p>
<p>4. R&amp;S&reg;FSWP Phase Noise Analyzer and VCO Tester</p>
<p>来源：R&amp;S 官网</p>
<p>https://www.rohde-schwarz.com/pk/products/test-and-measurement/phase-noise-analyzers/rs-fswp-phase-noise-analyzer-and-vco-tester_63493-120512.html</p>
<p>5. AM/FM/PM Modulation Analysis（FSW-K7 技术指标）</p>
<p>来源：R&amp;S CDN</p>
<p>https://cdn.rohde-schwarz.com.cn/pws/dl_downloads/pdm/cl_brochures_and_datasheets/specifications/3607_1042_22/AM-FM-PM-Modulation-Analysis_specs_en_3607-1042-22_v1100.pdf</p>
</section>
<section></section>
<p style="display: none;">&nbsp;</p>
<p style="margin: 24px 0 0; padding: 12px 14px; background: #f7f8fa; border-left: 4px solid #07c160; color: #666; font-size: 14px; line-height: 1.8;">来源：<a href="https://mp.weixin.qq.com/s/IHciDeX01cldLiajpwUE3Q" target="_blank" rel="noopener noreferrer">丁丁时光机</a></p>]]></description>
    <pubDate>Fri, 06 Nov 2026 09:27:33 +0800</pubDate>
    <dc:creator>广播发烧网</dc:creator>
    <guid>https://www.5bcl.com/story/4857.html</guid>
</item>
<item>
    <title>中短波接收的底噪来自家中的开关电源——中波能听多远，取决于发射功率和所处环境的电磁噪声</title>
    <link>https://www.5bcl.com/Circuit_maintenance/4854.html</link>
    <description><![CDATA[<!--?xml encoding="utf-8" ?-->
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">中波节目里的嗡嗡声有时与家里某一盏灯的开关相关。开灯时背景多一层沙沙声，关灯后声音干净一截。换台没有用，调整天线方向收效也有限，因为噪声不在电台那头，就在身边。</p>
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">这种情形在中短波上很常见。决定你能不能听清一个台的，除了发射功率和距离，还有你所处环境的电磁噪声水平。这一项最近二十年变差了不少，原因不在广播。</p>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/5b671c2fe264ca1dc8d65d39c3bc897c.png"></section>
<section><em style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box; overflow-wrap: break-word !important; font-style: italic; color: #000000; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-size: 16px; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; cursor: pointer; background: none left top / auto no-repeat scroll padding-box border-box rgba(0, 0, 0, 0); width: auto; height: auto; border-radius: 0px; border: 3px none rgba(0, 0, 0, 0.4);"><em style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box; overflow-wrap: break-word !important; font-style: italic; color: #000000; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-size: 16px; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; cursor: pointer; background: none left top / auto no-repeat scroll padding-box border-box rgba(0, 0, 0, 0); width: auto; height: auto; border-radius: 0px; border: 3px none rgba(0, 0, 0, 0.4);"><span style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; color: #888888; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-size: 15px; font-style: italic; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; display: inline !important;"><span style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important;">▲图：国际电联的无线电噪声模型把环境分成四档，从城市到安静乡村，人造噪声的差距可以到24 dB，相当于功率差两百多倍。同一个发射台，落在不同的环境里，收听结果完全不同。</span></span></em></em></section>
<p>&nbsp;</p>
<h2 style="box-sizing: border-box; margin: 30px 0px 15px; color: rgba(0, 0, 0, 0.85); font-weight: 500; cursor: pointer; padding: 0px; display: block; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"><span style="box-sizing: border-box; cursor: pointer; font-size: 22px; color: #000000; line-height: 1.5em; letter-spacing: 0em; font-weight: bold; display: block;">环境噪声决定接收下限</span></h2>
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">接收机有自己的灵敏度极限，但在中短波频段，这个极限通常不是瓶颈。真正的瓶颈是环境里已经存在多少噪声：周围有多少台设备在往外漏高频能量，决定了你的接收机能听到多微弱的信号。</p>
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">这条规律在规划里是明写的。国际电联的无线电噪声建议书按城市、居民区、乡村、安静乡村四个等级给出噪声水平，城市和安静乡村之间可以差到24 dB。而且噪声功率密度在频率越低时越高，中波和短波正好落在受影响最重的那一段。</p>
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">所以同一座中波台，在城市里的有效收听范围明显小于在安静乡村。这不是发射端偏心，是接收端的底噪不同。安静的地方，底噪压得低，微弱信号才能被接收。</p>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/e5a7b7f5dfe226ff93c0ff869d819ff4.png"></section>
<section><em style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box; overflow-wrap: break-word !important; font-style: italic; color: #000000; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-size: 16px; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; cursor: pointer; background: none left top / auto no-repeat scroll padding-box border-box rgba(0, 0, 0, 0); width: auto; height: auto; border-radius: 0px; border: 3px none rgba(0, 0, 0, 0.4);"><em style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box; overflow-wrap: break-word !important; font-style: italic; color: #000000; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-size: 16px; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; cursor: pointer; background: none left top / auto no-repeat scroll padding-box border-box rgba(0, 0, 0, 0); width: auto; height: auto; border-radius: 0px; border: 3px none rgba(0, 0, 0, 0.4);"><span style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; color: #888888; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-size: 15px; font-style: italic; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; display: inline !important;"><span style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important;">▲图：人造噪声在频率低的一头更重，中短波正好落在这一段。同一座城市里的调频收听，受的影响就小得多。</span></span></em></em></section>
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">&nbsp;</p>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/0e2ca14f2d1f153238e8698e08fea916.png"></section>
<h2 style="box-sizing: border-box; margin: 30px 0px 15px; color: rgba(0, 0, 0, 0.85); font-weight: 500; cursor: pointer; padding: 0px; display: block; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: center; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"><span style="box-sizing: border-box; cursor: pointer; font-size: 22px; color: #000000; line-height: 1.5em; letter-spacing: 0em; font-weight: bold; display: block;">开关电源成为主要噪声源</span></h2>
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">二十多年前，家里的电源大多是工频变压器加整流滤波，结构笨重、效率低，但它工作在50 Hz，噪声主要落在极低频，对中波没什么影响。</p>
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">现在的电源换了类型。为了效率和小型化，手机充电器、路由器、机顶盒、电视、变频空调、太阳能逆变器、电动车充电桩，用的都是开关电源：先把交流整流成直流，再用几十kHz到几百kHz的开关频率去转换。效率上去了，体积下来了，代价是内部那些快速通断的方波。方波的边沿很陡，阶梯式的谐波一路向上铺，能一直铺到几十MHz。</p>
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">一个开关电源在实验室里可以做得相当干净，加滤波、加屏蔽、优化布局就行。难点在于数量和价格。同一个小区里同时工作的开关电源可能有几千个，每一个都是一台小发射机；它们凑在一起，把整个环境的底噪抬起来。</p>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/fa8dd7fcb817f76ebbe5bbc09b6f75aa.png"></section>
<h2 style="box-sizing: border-box; margin: 30px 0px 15px; color: rgba(0, 0, 0, 0.85); font-weight: 500; cursor: pointer; padding: 0px; display: block; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: center; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"><span style="box-sizing: border-box; cursor: pointer; font-size: 22px; color: #000000; line-height: 1.5em; letter-spacing: 0em; font-weight: bold; display: block;">LED驱动电路的噪声</span></h2>
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">LED要恒流驱动，本质上就是一个开关电源，而且它往往安装在离接收天线最近的位置：天花板上、书桌上、床头。一支灯管的驱动电路和天线之间可能只有两三米，而发射台在几十公里外，这个距离比例决定了哪一方的干扰更容易被接收到。</p>
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">调光功能还会再加一层。调光电路靠快速通断来调亮度，通断本身就是噪声源；有些低成本的滤波做得简单，噪声更明显。所以常见的情形是，换一盏灯，中波就干净一截；把灯关掉，那阵沙沙声立刻消失。</p>
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">这不是LED这种器件的问题，是驱动电路和成本取舍的问题。同样瓦数的两支灯，一支安静，一支吵，差别全在那一小块电路板上。</p>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/232d2e04b4fdec1a72dfd6012dfb6c57.jpeg"></section>
<section><em style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box; overflow-wrap: break-word !important; font-style: italic; color: #000000; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-size: 16px; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; cursor: pointer; background: none left top / auto no-repeat scroll padding-box border-box rgba(0, 0, 0, 0); width: auto; height: auto; border-radius: 0px; border: 3px none rgba(0, 0, 0, 0.4);"><em style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box; overflow-wrap: break-word !important; font-style: italic; color: #000000; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-size: 16px; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; cursor: pointer; background: none left top / auto no-repeat scroll padding-box border-box rgba(0, 0, 0, 0); width: auto; height: auto; border-radius: 0px; border: 3px none rgba(0, 0, 0, 0.4);"><span style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; color: #888888; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-size: 15px; font-style: italic; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; display: inline !important;"><span style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important;">▲图：一间普通住宅里的噪声源分布。灯和充电器离天线最近，路由器、变频家电、智能电表各自贡献一份，合起来决定这台收音机听到多少底噪。</span></span></em></em></section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/be9c72a029633db1abcfcdf91b42e241.png"></section>
<h2 style="box-sizing: border-box; margin: 30px 0px 15px; color: rgba(0, 0, 0, 0.85); font-weight: 500; cursor: pointer; padding: 0px; display: block; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: center; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"><span style="box-sizing: border-box; cursor: pointer; font-size: 22px; color: #000000; line-height: 1.5em; letter-spacing: 0em; font-weight: bold; display: block;">电力线传导的噪声</span></h2>
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">中短波上的噪声不只从空气里来，还能顺着电线走。</p>
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">电力线通信用在智能电表和部分电力线组网上，做法是把高频信号直接注入电力线路。这些信号的频率和中短波频段有重叠。噪声一旦上了电线，整条线路就是一根天线，旁边的接收天线会就近把它拾取进来。</p>
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">这也解释了一些现场经验。同样的电器，换一个插座，噪声程度不一样；设备关掉电源但插头还插着，噪声仍然在；把插头拔掉，声音才干净。顺着电线找源头，比顺着空气找更有效。</p>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/4dad26cf6efd4c81e90a04b88503796a.png"></section>
<h2 style="box-sizing: border-box; margin: 30px 0px 15px; color: rgba(0, 0, 0, 0.85); font-weight: 500; cursor: pointer; padding: 0px; display: block; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: center; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"><span style="box-sizing: border-box; cursor: pointer; font-size: 22px; color: #000000; line-height: 1.5em; letter-spacing: 0em; font-weight: bold; display: block;">单台合规与总体噪声抬升</span></h2>
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">电磁兼容标准是按单台设备设限的：一台设备在指定的测试条件下发射不超过某个值，就算合规。这套办法管的是"这一台"，不是"这一片"。</p>
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">城市里的现实是成千上万台设备同时工作。每一台都在自己的限值以内，合起来的底噪是它们叠加的结果，而没有任何一项测试来衡量这个总和。个体合规、总体抬升，结构就是这样。</p>
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">所以环境噪声变差，很难归因到某一台设备、某一项标准或者某一家单位身上。它是产品形态整体换代之后的一个副产品：用电设备越来越多地用开关方式工作，而广播恰好工作在对这些副产品最敏感的那一段频率上。</p>
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/0ffd3e18b879c716245de8d6f06a0418.png"></p>
<section><em style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box; overflow-wrap: break-word !important; font-style: italic; color: #000000; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-size: 16px; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; cursor: pointer; background: none left top / auto no-repeat scroll padding-box border-box rgba(0, 0, 0, 0); width: auto; height: auto; border-radius: 0px; border: 3px none rgba(0, 0, 0, 0.4);"><em style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box; overflow-wrap: break-word !important; font-style: italic; color: #000000; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-size: 16px; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; cursor: pointer; background: none left top / auto no-repeat scroll padding-box border-box rgba(0, 0, 0, 0); width: auto; height: auto; border-radius: 0px; border: 3px none rgba(0, 0, 0, 0.4);"><span style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; color: #888888; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-size: 15px; font-style: italic; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; display: inline !important;"><span style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important;">▲图：设备一台一台测，每台都在限值以内；把一大片设备放在同一片空间里，叠加起来的底噪可以越过单台的限值线。标准管的是单台，管不到这个总和。</span></span></em></em></section>
<p><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/741ed7ee68286c78218b45d4aa581518.png"></p>
<h2 style="box-sizing: border-box; margin: 30px 0px 15px; color: rgba(0, 0, 0, 0.85); font-weight: 500; cursor: pointer; padding: 0px; display: block; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: center; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"><span style="box-sizing: border-box; cursor: pointer; font-size: 22px; color: #000000; line-height: 1.5em; letter-spacing: 0em; font-weight: bold; display: block;">接收端与设备端的措施</span></h2>
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">环境噪声一时不会变好，能做的动作只能落在两头。</p>
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">接收这一头，最有效的办法是让天线离噪声源远一点。中短波的噪声主要是近场源辐射出来的，距离拉远，影响随之减小；把天线从室内移到阳台或者室外，效果常常比换一台更好的接收机明显。用电池供电做一次对比也有用：拔掉所有充电器，如果底噪明显下降，源头基本就在室内。</p>
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">找源头有简便办法：拿一台便携收音机调到中波的空白频率，逐个靠近各个电器试听，哪个电器附近的沙沙声最重，基本就能确定。</p>
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">设备这一头则是滤波和选择。给电源线加一个磁环、换一支做工更好的灯、把噪声大的适配器挪远，都是花小钱的动作。对公共收听场所来说，几支灯的差别就能决定中波能不能听清，这件事值得在采购时留意一下。</p>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/6b237936bd457b2f0053a1bcf8f33849.png"></section>
<h2 style="box-sizing: border-box; margin: 30px 0px 15px; color: rgba(0, 0, 0, 0.85); font-weight: 500; cursor: pointer; padding: 0px; display: block; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: center; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"><span style="box-sizing: border-box; cursor: pointer; font-size: 22px; color: #000000; line-height: 1.5em; letter-spacing: 0em; font-weight: bold; display: block;">接收环境的不可控因素</span></h2>
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">一座中波台的覆盖，通常按发射功率、地波衰减和接收机灵敏度来算。这套算法里，接收端的噪声环境是一个输入条件，不是一个能被发射端改变的量。</p>
<p style="box-sizing: border-box; margin: 0px; cursor: pointer; color: #000000; font-size: 16px; line-height: 1.8em; letter-spacing: normal; text-align: justify; text-indent: 0px; padding: 8px 0px; font-family: Optima, 'Microsoft YaHei', PingFangSC-regular, serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">这就带来一个不太好说清的现实：同样一座台、同样的功率，在电磁环境干净的年代能覆盖的地方，现在可能因为底噪抬高而无法听清。发射端没有变化，接收端的环境变了。广播能够控制的是发射侧，另一部分取决于大量分散在用户家中的用电设备。</p>
<p style="display: none;">&nbsp;</p>
<p style="margin: 24px 0 0; padding: 12px 14px; background: #f7f8fa; border-left: 4px solid #07c160; color: #666; font-size: 14px; line-height: 1.8;">来源：<a href="https://mp.weixin.qq.com/s/t517OuBLzOXLbXSMM6-Veg" target="_blank" rel="noopener noreferrer">纽格立科技</a></p>]]></description>
    <pubDate>Fri, 06 Nov 2026 08:18:00 +0800</pubDate>
    <dc:creator>广播发烧网</dc:creator>
    <guid>https://www.5bcl.com/Circuit_maintenance/4854.html</guid>
</item>
<item>
    <title>难得一见的熊猫微型卡片收音机——熊猫 2000</title>
    <link>https://www.5bcl.com/jiaoliu/4846.html</link>
    <description><![CDATA[<!--?xml encoding="utf-8" ?-->
<section>南京无线电厂（熊猫电子）在几十年间推出了众多机型，既有大型落地电子管机，也有便携袖珍晶体管收音机。今天给大家分享一款存世量很小的熊猫超薄卡片式收音机&mdash;&mdash;熊猫2000。</section>
<section>&nbsp;</section>
<section>熊猫2000卡片收音机由国营南京无线电厂在90年代初研发量产，是专为随身便携场景打造的超薄专用收音机。整机尺寸仅85mm&times;55mm，机身极致压缩至6mm左右，相当于普通7张银行卡摞起来的厚度！可轻松塞进衬衫口袋、钱包夹层。</section>
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<section>下图为熊猫2000收音机的外观多角度图片，后壳生产厂家为南京收音机厂。</section>
<section style="text-align: center;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/8cbb62120ddde0c49cccdab3d4eac70b.jpeg"></section>
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<section>熊猫2000卡片收音机为了实现极限超薄的机身，从以下多个方面进行了针对性设计，可谓挖空心思，用心良苦。</section>
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<section>一、舍弃传统干电池仓，采用1.5V 纽扣电池供电，从电源上压缩整机体积。整机无外置独立电源开关，耳机插孔兼任电源总开关，插入耳机自动开机通电、接收广播，拔出耳机彻底断电，一枚纽扣电池可稳定续航30天以上，可以满足九十年代日常随身收听需求。</section>
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<section>特别值得一提的是，此机所配耳机是阻抗较高的耳塞机。据使用者反馈，每天收听90分钟，可以连用一个月。如果换用低阻的耳机，续航能力会大为缩短。</section>
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<section>二、全部元件平躺，扁平安装。</section>
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<section>拆开整机外壳，能直观看到这款机子为了最大限度&ldquo;减薄&rdquo;，全部元件平躺扁平安装，这在九十年代的工艺条件下，堪称匠心满满。</section>
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<section>常规晶体管收音机的三极管、电容、电阻、磁棒线圈多为立式垂直安装，占用纵向空间较大。而熊猫2000内部，除磁棒外的15个元件，全部采用卧式贴平安装，元件紧贴电路板板面。就连核心的磁棒天线，也选用特制超薄短扁磁棒，直接平铺固定在机壳内部卡槽中，即彻底避免滑动，又不增加整机厚度，这是普通收音机看不到的精细化设计。</section>
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<section>三、电路板多处挖孔瘦身。</section>
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<section>下图为挖孔电路板。可以看出，三极管、电容等较厚的元件均置于孔洞之中。</section>
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<section>这是熊猫2000最具标志性的设计特征。原厂并未使用常规规整PCB电路板，而是根据机身内部空间、元件高度、元件位置灵活设计，对电路板进行多处精准挖孔、镂空处理。将三极管等厚度较大的元器件，放置在圆孔之中，充分利用了狭小的空间。这个构思可谓巧妙。</section>
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<section>这种按需裁切、镂空挖孔的定制化电路板设计，在九十年代量产民用收音机中极其罕见。</section>
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<section>三、定制微型薄膜可变电容。</section>
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<section>受限于超薄机身，常规尺寸薄膜可变电容无法使用。熊猫2000搭载了特制的超小型薄膜可变电容。</section>
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<section>下图圆圈中元件即为超小可变电容。可以看得出，体积比三极管大不了多少。</section>
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<section>从整体电路板来看，整机采用了3管直放式电路而非超外差电路，从而避免了中周、变压器等大体积的元件。电路虽然简单，但在方寸镂空电路板上，实现了稳定的中波接收性能，便携实用性很强。</section>
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<section>从量产背景来看，熊猫2000的稀缺性早已注定。九十年代初，多波段收音机是市场主流，消费者更青睐功能全面的机型。这款仅保留单中波、主打极致超薄的卡片机，受众面极窄，市场销量注定不会太大。</section>
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<p style="margin: 24px 0 0; padding: 12px 14px; background: #f7f8fa; border-left: 4px solid #07c160; color: #666; font-size: 14px; line-height: 1.8;">来源：<a href="https://mp.weixin.qq.com/s/IPnTHHOLyJ1bXV2Vrt3V2A" target="_blank" rel="noopener noreferrer">杂七杂八小科普</a></p>]]></description>
    <pubDate>Fri, 06 Nov 2026 06:55:21 +0800</pubDate>
    <dc:creator>广播发烧网</dc:creator>
    <guid>https://www.5bcl.com/jiaoliu/4846.html</guid>
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    <title>秋天来了，生活有声，有色，也有温度</title>
    <link>https://www.5bcl.com/jiaoliu/4849.html</link>
    <description><![CDATA[<!--?xml encoding="utf-8" ?-->
<p style="margin-left: 16px; margin-right: 16px; text-align: left; line-height: 1.75em;"><span style="font-size: 14px;">深圳的秋天，总是来得有些迟。</span></p>
<p style="margin-left: 16px; margin-right: 16px; text-align: left; line-height: 1.75em;"><span style="font-size: 14px;"><span style="font-weight: bold;">当北方的树叶已经染上金黄，风里有了明显的寒意时，深圳却还保留着夏日的热烈。</span>阳光依旧明亮，绿树依然浓密，秋天依然藏在角落里，偶尔悄悄的探出一下脑袋。</span></p>
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<p style="margin-left: 16px; margin-right: 16px; text-align: left; line-height: 1.75em;">&nbsp;</p>
<p style="margin-left: 16px; margin-right: 16px; text-align: left; line-height: 1.75em;"><span style="font-size: 14px;">它似乎并不急于宣告自己的到来。</span></p>
<p style="margin-left: 16px; margin-right: 16px; text-align: left; line-height: 1.75em;"><span style="font-size: 14px;">它藏在清晨的一阵微凉里，藏在黄昏逐渐柔和的光线里，也藏在一场雨后，空气中若有若无的清新里。</span></p>
<p style="margin-left: 16px; margin-right: 16px; text-align: left; line-height: 1.75em;"><span style="font-size: 14px;">就像今天的清晨，小编突然感受到了一种久违的宁静，这是北方的秋天才有的味道，再一看时间，已经进入11月了，小编决定给秋天举行一场欢迎仪式</span></p>
<p style="margin-left: 16px; margin-right: 16px; text-align: left; line-height: 1.75em;"><span style="font-size: 14px;">今天彻底的放空自己，回到过去，不再打开手机，不再刷新消息，用一杯咖啡、一段音乐，一抹窗边的残阳，来和秋天说一句Hello</span></p>
<p style="margin-left: 16px; margin-right: 16px; text-align: left; line-height: 1.75em;"><span style="font-size: 14px;"><span style="font-weight: bold;">我打开了朝元之声C2，让喜欢的节目慢慢流淌，这就是收音机存在的意义，它可以填满一个安静的午后，可以是一段熟悉的旋律，也可以是来自遥远城市的电台声音。</span></span></p>
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<p style="margin-left: 16px; margin-right: 16px; text-align: left; line-height: 1.75em;"><span style="font-size: 14px;">&nbsp;</span></p>
<p style="margin-left: 16px; margin-right: 16px; text-align: left; line-height: 1.75em;"><span style="font-size: 14px;">时间总会向前走，但声音有时候可以把我们带回过去，而音乐和音响，居然成了我家居空间中自然的一部分，它们很自然的融合在那里，似乎已经在这个家里呆了很多年</span></p>
<p style="margin-left: 16px; margin-right: 16px; text-align: left; line-height: 1.75em;"><span style="font-size: 14px;">我就这样，一个人，度过了一个下午，在音乐和电台的陪伴中，在我关于秋天的回忆中漫步</span></p>
<p style="margin-left: 16px; margin-right: 16px; text-align: left; line-height: 1.75em;"><span style="font-size: 14px;">想起开车路过风陵渡口，在那里想到郭襄一见杨过误终身的故事</span></p>
<p style="margin-left: 16px; margin-right: 16px; text-align: left; line-height: 1.75em;"><span style="font-size: 14px;">想起路过罗布泊，偶遇几位旅友，荔枝木烤的羊肉滋滋冒油，篝火和香气混着戈壁的风飘向远方</span></p>
<p style="margin-left: 16px; margin-right: 16px; text-align: left; line-height: 1.75em;"><span style="font-size: 14px;">想到夜游塔尔寺，深秋的空气里带着高原寺院特有的清冽，似乎灵魂都可以在这里清洗</span></p>
<p style="margin-left: 16px; margin-right: 16px; text-align: left; line-height: 1.75em;"><span style="font-size: 14px;">想起在大柴旦水上雅丹露营，那里秋天很干净，银河就在手边，伸手就可以把里面的星星摘下来</span></p>
<p style="margin-left: 16px; margin-right: 16px; text-align: left; line-height: 1.75em;"><span style="font-size: 14px;">秋天并不只是一个季节。</span></p>
<p style="margin-left: 16px; margin-right: 16px; text-align: left; line-height: 1.75em;"><span style="font-size: 14px;">它也是一段段走过的路，一次次不期而遇，一些已经远去却从未真正消失的时光。</span></p>
<p style="margin-left: 16px; margin-right: 16px; text-align: left; line-height: 1.75em;"><span style="font-size: 14px;">而音乐，恰好是打开这些记忆的一把钥匙</span></p>
<p style="margin-left: 16px; margin-right: 16px; text-align: left; line-height: 1.75em;"><span style="font-size: 14px;">愿我们的用户，也有时间听一听喜欢的音乐，有心情读几页喜欢的书，也有一个可以安静待着的下午。</span></p>
<p style="margin-left: 16px; margin-right: 16px; text-align: left; line-height: 1.75em;"><span style="font-size: 14px;">秋天来了。愿我们在忙碌之外，依然听得见生活的声音。<img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/7a657c54944b149355cecc37795aaf66.png"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/3a7ac94dc478e2436a0d03f91e003f08.png"></span></p>
<section style="text-align: left; margin-left: 16px; margin-right: 16px; line-height: 1.75em;"><img style="max-width: 100%; height: auto; border-radius: 4px; margin: 10px 0;" src="/content/uploadfile/weixin/202611/67085af8f5b7cd8068a0376f25d82f63.jpeg"></section>
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<p style="display: none;">&nbsp;</p>
<p style="margin: 24px 0 0; padding: 12px 14px; background: #f7f8fa; border-left: 4px solid #07c160; color: #666; font-size: 14px; line-height: 1.8;">来源：<a href="https://mp.weixin.qq.com/s/1vufvNQ7aiEcBM-JgWdCqA" target="_blank" rel="noopener noreferrer">朝元科技</a></p>]]></description>
    <pubDate>Mon, 02 Nov 2026 17:36:37 +0800</pubDate>
    <dc:creator>广播发烧网</dc:creator>
    <guid>https://www.5bcl.com/jiaoliu/4849.html</guid>
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    <title>他腾出一套房，安放四五百台收音机！每天开机调试是庄建法最开心的事</title>
    <link>https://www.5bcl.com/jiaoliu/4829.html</link>
    <description><![CDATA[<!--?xml encoding="utf-8" ?-->
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<p style="margin-left: 8px; margin-right: 8px;"><span style="font-size: 17px;">拧开旋钮，先是一阵沙沙的电流声，随后，新闻资讯、悠扬的闽南语老歌等才从喇叭里慢慢流淌出来。在思明区63岁的庄建法家中，这样温润、厚重的声响是每天的生活背景音。</span></p>
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<p style="margin-left: 8px; margin-right: 8px;"><span style="font-size: 17px;">在智能化设备普及的当下，老式收音机早已淡出大众视野，可对于庄建法而言，这些被称为&ldquo;戏匣子&rdquo;&ldquo;话匣子&rdquo;的物件从未退场。数十年热爱不改，他痴心搜罗、悉心珍藏、精心修复，家中存放着四五百台收音机，历经岁月摩挲留下的痕迹记载着不同年代的故事。因为这项爱好，他收获了无穷乐趣，闲适的退休生活也进入到了更加鲜活、响亮的&ldquo;频道&rdquo;。</span></p>
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<section style="font-size: 16px; color: #ffffff; text-align: center; padding: 0px 10px; box-sizing: border-box; margin-left: 8px; margin-right: 8px;"><strong>一只&ldquo;魔盒&rdquo;打开少年好奇</strong></section>
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<p style="margin-left: 8px; margin-right: 8px;">1972年，庄建法的表哥送来一台亲手组装的收音机。在那个物资匮乏、娱乐稀缺的年代，这物件是寻常人家难得一见的奢侈品。少年庄建法满心好奇：一只方方正正的盒子，一根细长的天线，为什么能发出美妙的声音，传来五湖四海的消息？收音机，成了他眼中的&ldquo;魔盒&rdquo;。</p>
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<p style="margin-left: 8px; margin-right: 8px;">深埋心底的喜爱，在成年后终于得以落地。上个世纪80年代，参加工作、拥有稳定收入的庄建法开始追寻年少的热爱，陆陆续续购置各式收音机，有时也回收别人丢弃的旧机器。&ldquo;有人当废物，有人当宝贝，我把旧机子带回家擦拭除尘、简单维修一下，家里的藏品又多了一样，心里很满足。&rdquo;庄建法说，每一台收音机都带着独有的时代温度，为了搜罗更多机型，他投入了大量的时间和薪资，乐此不疲。</p>
<p style="margin-left: 8px; margin-right: 8px;">&nbsp;</p>
<p style="margin-left: 8px; margin-right: 8px;">2000年以后，数码产品一拨接一拨问世，收音机被挤到市场角落，庄建法反倒收得更起劲。别人闲暇时聚餐、游玩，他却往旧货市场跑；别人添置新电器，他四处打听谁家有不用的老机器。互联网兴起后，他又学会在线上淘货，将许多绝版的机型收入囊中。一台台收音机保留着特定年代的原材料工艺、声学技术与制造水准，是一个时代前沿科技的缩影和结晶，如今随手拿起一台，庄建法都能清晰道出它们的来历和特点。</p>
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<section style="font-size: 16px; color: #ffffff; text-align: center; padding: 0px 10px; box-sizing: border-box; margin-left: 8px; margin-right: 8px;"><strong>四五百台 留存时代记忆</strong></section>
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<p style="margin-left: 8px; margin-right: 8px;">数十年的&ldquo;寻宝&rdquo;，庄建法已经积攒下多达四五百台收音机。从早期的电子管收音机，到迭代升级的晶体管收音机、集成电路收音机，时代脉络清晰可辨；从台式、落地式到便携式、袖珍式，各类型丰富多元；更有卡带、CD、磁带三合一的多功能机型。为了妥善安放这些珍贵老物件，他专门腾出一套房子集中存放。</p>
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<p style="margin-left: 8px; margin-right: 8px;">庄建法告诉导报记者，收藏不是简单的物件收藏，而是珍藏一段鲜活的工业历史，留存一代人的生活记忆。</p>
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<p style="margin-left: 8px; margin-right: 8px;">&ldquo;很多人跟我说收音机不保值，投入其中耗时耗力，但我想凡事不能都用利益衡量，收藏是一个自我满足的过程。我这里有国产的经典品牌熊猫，也有美国、德国、日本、意大利、瑞士、奥地利、波兰的机子，每一台我都很喜欢！&rdquo;庄建法深知，优质老机型可遇不可求，每每邂逅心仪的珍品，即便耗资不菲也会咬牙拿下。</p>
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<section style="font-size: 16px; color: #ffffff; text-align: center; padding: 0px 10px; box-sizing: border-box; margin-left: 8px; margin-right: 8px;"><strong>坚守热爱 治愈退休日常</strong></section>
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<p style="margin-left: 8px; margin-right: 8px;">退休前，庄建法是一名国企职工，褪去职场身份，他的生活比原来更加充实。四五百台收音机是他最珍贵的伙伴，也是他最牵挂的心事。&ldquo;老机器搁久了会坏，我每天都要打开不同的机子听一听，开机调试一下，保证每台都能响着。比较头疼的是，现在修理收音机的店铺越来越少了，懂老机器的师傅也很难找，遇到机子出毛病，只能上网找外地师傅，打包寄过去，修好再寄回来。&rdquo;</p>
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<p style="margin-left: 8px; margin-right: 8px;">为攻克维修难题，庄建法还开启了自学之路。他购买收音机维修专业书籍，从零钻研。最初，面对精密的机芯还一头雾水、无从下手；现在，他已经能够熟练操控万用表、排查各类故障。闲下来时，他还会把破损的卡带翻出来修复，常常一坐就是几个小时。当沉寂数十年的老古董再度响起电波，带着颗粒感的声音仿佛从不同年代传来，总能让他眉眼生辉、满心欢喜。</p>
<p style="margin-left: 8px; margin-right: 8px;">&nbsp;</p>
<p style="margin-left: 8px; margin-right: 8px;">采访最后，庄建法寄语当下年轻人：不沉溺网络的虚无，不熬夜消耗身体，尽早寻觅一份自己真正热爱的事物，人生便有奔赴的方向和乐趣，即便将来老去，也能活出精彩的晚年。</p>
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<p style="text-align: right;"><span style="font-size: 15px;">海峡导报记者 曾宇姗/文 张伟华/图</span></p>
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<p style="text-align: right; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; clear: both; min-height: 1em; color: #030303; font-size: 14px; letter-spacing: 1.5px; text-decoration-thickness: initial; font-family: 'PingFang SC NEW', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', 'Hiragino Sans GB', 'Microsoft YaHei UI', 'Microsoft YaHei', Arial, sans-serif;"><span style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="font-size: 15px;">有故事，有绝活，有心事，有困难</span></span></span></p>
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<p style="margin: 24px 0 0; padding: 12px 14px; background: #f7f8fa; border-left: 4px solid #07c160; color: #666; font-size: 14px; line-height: 1.8;">来源：<a href="https://mp.weixin.qq.com/s/r1XiywTle5lyy84yUWV17w" target="_blank" rel="noopener noreferrer">海峡导报乐龄周刊</a></p>]]></description>
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