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bd1hp:电缆缩短型40米多波段垂直天线,无地网应用实验成功。说来也巧,我前几天实验80米缩短天线时还在为地网发愁,因为我手里没有那么多电线,看来以后不用为此犯愁了。架完后,简单的通了几个 .. (2017-03-28 12:52)
bd1hp:今天下午拆掉80米电缆天线后,顺便用鱼竿在14兆实验了一下电缆RFD垂直天线,从曲线图可以看出这天线14兆波段基本可以全覆盖。天线制作很简单,找一段8-10米长的50或75电缆,芯线上焊一段5米长 .. (2017-03-22 17:17)
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bd1hp:1、用电线做天线:300/频率/4 * 0.96=天线振子长度....... (2017-03-22 09:03)
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