[Collins] Clairvoyant KWM technician needed

John King via Collins collins at mailman.qth.net
Mon Dec 29 16:14:42 EST 2014


Howdy Collins folks. I recently recapped my 516F-2 power supply and now I have a KWM2 problem. I have no audio from the receiver however when the KWM2 is first turned on the S meter rises to full right scale and the settles back down to normal minimum scale. That indicates to me that the receiver AVC is working, if nothing else is working. NO hiss, hum or any other noise from the speaker.

Keying the PTT microphone produces no results and when the transmit switch is rotated to tune or lock the relay does not energize. That leads me to think that something common to the receiver audio and transmit circuitry might be involved in the problem.

The 516F-2 is producing the required voltages, but he KWM 2 is not responding with anything but dial lights and lighted tubes. Anyone experienced a KWM 2 exhibiting those symptoms? Thanks for your input. 73, John, K5PGW


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