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i have a 142 with a dial a watt.
all the way up it dead keys 10 with no swing, all the way down it keys 2 swings to 6. what is the problem here?
on SSB it kicks butt and swings well over 20.
Thanks for any ideas.

depending on whos been in it ? 2 to 6 sounds OK 10 watt DK no swing sounds way to much on AM. SSB sounds about right. It's kind of hard to tell other then having it looked at.

Depending on how it was tuned ? I just can't see a 10 watt DK on one of those. Maybe a 5 or 6 with a 20 watt swing or so with the variable all the way up. Wish I could tell you more. Good luck to you

the Cobra 142 should produce up to 20WPEP from 5W of Carrier on AM and between 25-30WPEP on SSB fully modulated into a 50ohm load. if you're making measurements with a peak reading wattmeter as you should be and it performs as you said then the transmitter and amc/alc circuits are out of alignment and mis-adjusted, respectively. there could be other problems too.

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the problem is bad diode D60 just replace it

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