Bob,
Can we assume that it worked properly before? If so, try replacing the
1N5711 diodes in the wattmeter circuit (they are frequently zapped by a
lightning surge and show no outward signs of failure) - you may also want to
re-check the soldering of the bifilar transformer. Sometimes a marginal
solder joint will work for a year or so and then begin to cause problems.
73,
Don W3FPR
> -----Original Message-----
> My 3 1/2 year old K2 (SN 3432) with KPA 100 swr circuit seems to have
> developed a problem. Into a dummy load at 5 W with an external swr
> bridge also connected, it indicates swr of about 5:1 on 80 meters down to
> 1.7:1 on 20 meters. That's the lowest I can get by adjusting C1. The
> external bridge indicates 1 on all bands. It didn't used to do this.
>
> C1 adjusts to minimum in two places (so I am not at an extreme value).
> Nothing looks smoked.
> I do get power out to the dummy load.
>
> Anyone run across this before?
>
> Bob
>
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