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 > _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
