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max110:请教楼主,我现在手头有台720因为拆面板插错线,烧过频率存储的93c46;更换93C46后现在接收很正常,但是打开转发,一按对讲机,就一直发射。对讲机松了PTT还一直发射,是很强的白噪声,用其他 .. (2012-07-15 00:22)
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bg5qtb:宁德中继在调整过程中发现双工器真的很重要,双工器虽然请中华xx调整过,后来发现双工器消耗了15w的发射功率,这15w的功率在双工器里打转,中继什么毛病都出来了,频偏、交流声、灵敏度低 .. (2010-03-31 11:51)
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bg4ilm:跟帖求助!请教tkr720改业余段的问题。频率写好了,但是调整出问题了!tkr-720(1)频率改为rx144050tx147975,接收vco最高只能调到2v左右,发射vco只有141mv,就再也调不上去了,怎么办?请赐教! (2007-09-21 00:27)
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