This behavior is frequently caused by oxidation on a
normally-closed (relaxed) relay in the antenna chain. Amplifier
relays, bandpass filter relays, antenna selector relays are all
suspects. It also could be a poorly soldered contact in the
antenna, or an oxidized PL-259 center pin. When you transmit, it
burns through the oxidation, which lasts only for a while. A
treatment with Deox-it or a relay burnishing tool on the
offending contact is the cure.
Dave Hachadorian, K6LL
Yuma, AZ
-----Original Message-----
From: Dick Lindzen
Sent: Tuesday, February 16, 2016 7:45 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Receive drops about 6 s-units
I'm having a problem with my K3 (with 2 receivers and a P3).
While listening for a few minutes, signals drop about 6 s-units.
Original strength returns when I push the PTT, but the drop
returns after a minute or two. None of this impacts transmit.
It seems like a bad relay. Has anyone else encountered this?
73, Dick, WO1I
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