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 Post subject: TX problem with my KX3
PostPosted: Thu May 26, 2016 10:50 am 
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Joined: Thu Jun 19, 2014 5:49 am
Posts: 1
My KX3 is keying the Hardrock when it is in receive mode. When I messure TX on the KX3 it is 6Kohm in receive mode and 3 ohm in transmit mode. Any good idea. Please send me an email to oz6hq@oz6hq.dk if You have a solution.


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PostPosted: Sat May 28, 2016 6:04 am 
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Joined: Mon Jul 23, 2012 6:25 am
Posts: 1142
6K ohms seems a little low for an open circuit, my KX3 measures over 100K ohms on RX. You only have to pull 0,5 mA from the HR50 to key it so 6K just might do it. Aside from fixing the KX3 you could try pulling the PTT line high with a 1K to 10K resistor. That will work unless the KX3 get's worse.

73,
Jim WA2EUJ


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