[Heathkit] HW-101, full carrier, no voice when in SSB position & PTT activated

Sat, 31 May 2003 22:19:29 -0400

John,

Check the carrier null pot. It may be open or intermittent. They have
had a history of failure.

			73,

			Bob WB2VUF

[email protected] wrote:
> 
> Greetings,
> 
> I am trying to restore a HW-101, the receiver works fine, the transmitter
> works fine but only on CW. When shifting to SSB and pressing the PTT button, all
> I get is full carrier out, +/- 100 watts Continuous Wave, I cannot get the
> carrier to balance out no matter what I try. The bias is set correctly, but there
> is no idling current in SSB, just full output each time I press the PTT
> switch with the mode switch in either SSB position.
> 
> Normal logic would suggest the trouble is in the balanced modulator section,
> but with these old rigs, it seems that normal logic and trouble shooting
> techniques are out the window. Has anyone else experienced this, can anyone point
> me in the right direction? I have read many of the archives, but maybe I missed
> the one referring to this phenomena.
> 
> Any help is appreciated.
> 
> 73,
> John, K3AOT
> 
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