Re: No power out and receive seems to be about 20 dB down on my K3s, intermittent....
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My power supplies are 30 -40 years old. Capacitors dry out.
Early power supply failures first starts out with some "defect" in
the K3. I learned that the hard way.
73, Lou KE1F
On 10/13/2020 4:15 PM, Ray Maxfield
Verify your +13.5 Power to the Radio.
Sent: Tuesday, October 13, 2020 12:37 PM
Subject: [Elecraft-K3] No power out and receive
seems to be about 20 dB down on my K3s, intermittent....
During the Nevada QSO party, the rig
intermittently started going from 100 watts to virtually 0
(would not move the needle on my Bird with a 250 watt element)
at the same time when I released the ptt, the received audio
dropped about 20 dB and the screen on my P3 would only show
the peaks on the very strongest station as opposed to easily
seeing stations that were S3... A change in bands would
initially clear this fault, but it would shortly reappear on
the new band.
With the drop on the IF signal to the P3, it seems to be
something in the antenna tuner. I tried putting it on bypass
and for a couple of transmissions saw the same problem, but it
then seemed to operate normally. I went back to the auto
setting for the atu and it still was operating normal at this
Any ideas on where to look for this problem?
Thanks, Jim W6US
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