[Drake] Interesting Problem

[Bill Abate]

Andy,

I had he same problem with my c line two years ago.  Seems the T-4XC
6EJ7 premixer developed a bad socket connection.  Finally found it and
sprayed it with cleaner.  Not completely cured as once in a while I have
to wiggle it to get it to full output.  If that is not it I'll bet it is
in that circuitry.

73,

Bill, K3PGB


Andrew Siska wrote:
> 
> I've been using a R-4A and T-4XC from my collection of Drake gear over the
> past several weeks.  All has been well until a few days ago.
> 
> While operating using the transmitter as the controlling device in
> transceive mode,  I noticed my output power dropping as I was operating.
> Within a few seconds, the output drops to 0.  If I switch to separate mode,
> or use the receiver as the controlling device in transceive mode, I obtain
> full output again.  If I switch back to using the transmitter, the output
> disappears.  The problem is intermittent.  It doesn't happen every time I
> use this set, nor does it happen at a particular time after power-up.
> 
> I operate CW and haven't bothered to see if the problem appears in other
> modes.  I don't think the mode is related to the problem.
> 
> Since switching to spot or receiver transceive seems to cure the problem, I
> am assuming the problem is in the injection circuits.
> 
> Any ideas before I take the cover off?
> 
> Wishing all of you a healthy and happy new year,
> 73
> Andy / N9CU
> 
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