Jim,
K1 and the entire 160 meter low pass filter is not in the path for the
RX ANT, so changing K1 will not help.
Remove the top cover (you can operate like that) and tap on things
gently with a pencil eraser to see if you can locate the problem.
73,
Don W3FPR
On 3/2/2019 4:17 PM, Jim KO5V wrote:
Don,
Switching to the RX antenna has no effect. The only thing that seems to work is
a tap on the back
of the left side panel, at about the 2d connector. That causes the 2Mhz birdie
to return. I've
touched up all of the solder joints on the 160M board, and on J14. Maybe K1 is
bad, but I'll look
again for a bad solder joint before going there.
Thanks again. 73,
Jim KO5V
-----Original Message-----
From: Don Wilhelm <[email protected]>
Sent: Mar 2, 2019 1:58 PM
To: Jim KO5V <[email protected]>, Elecraft List <[email protected]>
Subject: Re: [Elecraft] K2: Flaky 160M switching
Jim,
Replacing K8 is not going to do anything for 160 meters. The relay that
switches in the 160 meter low pass filter is K1 on the K160RX board.
Try this the next time it happens - while on 160 meters, change the
antenna to the RX ANT jack and set the RX ANT menu parameter to ON. See
if you obtain receive. The RX ANT bypasses the Low Pass Filter.
You may have a poor solder connection on the K160RX board or its header.
73,
Don W3FPR
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