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        <title>BI3AAX - 基础知识</title>
        <description>业余无线电学习</description>
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        <dc:date>2026-02-23T01:53:21+00:00</dc:date>
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        <title>呼号分区</title>
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        <description>业余无线电呼号前缀

BA、BD、BG、BH、BI前缀分配给普通业余电台，BR前缀分配给中继台，BJ前缀分配给空间台和信标台。 

业余无线电呼号前缀列表

中国分区

第1区：北京，卫星业余业务。 

第2区：黑龙江、吉林、辽宁。</description>
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        <title>摩斯密码</title>
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        <dc:date>2026-02-18T17:06:10+00:00</dc:date>
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        <title>时间转换</title>
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        <dc:date>2026-02-20T07:36:22+00:00</dc:date>
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        <title>通联卡片</title>
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1.清晰醒目的本台呼号；  

2.中英文的本台正式名称； 

3.中英文标记的本台地址和QSL交换地址； 

4.注明此卡发至何台； 

5.确认联络或收听报告； 

6.联络的年月日和时分；</description>
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        <title>信号强度</title>
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  R     说明    1    信号不可辨    2    不容易分辨    3    能辨别，但困难    4    能辨别，没什么困难    5    非常清楚  
信号强度</description>
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        <dc:date>2026-02-19T14:30:52+00:00</dc:date>
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        <title>字母解释法</title>
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  字母    代码    字母    代码    字母    代码    字母    代码    字母    代码    字母    代码    字母    代码    A    Alpha    B    Bravo    C    Charlie    D    Delta    E    Echo    F    Foxtrot    G    Golf</description>
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