I recently completed a K1 with the 4-band board including the 20M and 15M bands and I am having difficulty trouble-shooting a receiver problem on both 20M and 15M.
The receiver powered up fine and reception on 40M and 30M is much better than my other rig, a Kenwood TS-50. At the same time, reception is very poor on both 20M and 15M. I know the bands are open because I can receive CW on the TS-50, but when I switch to the K1 with the same antenna, no signal are detected, just noise. I don't have a signal generator, so I tuned all the premix filters and rf filters using my antenna and was able to get a good tuning peak on all bands. When I found the lousy performance on 20/15, I downloaded the K1 troubleshooting guide from the site and went through the routine for all bands. The receiver checked out OK for all four bands using my antenna and a series capacitor as a signal injector, but still no discernable CW on the K1 when I can hear things on the Kenwood. I checked continuity on the toroids and, likewise, counted all the turns and checked the polarity, and found no problems. As a final check, I ran the TS-50 on low power into a dummy load and ran a short wire antenna on the K-1 nearby. When I tested the K-1 this way, I picked up the TS-50 output at the expected points on all bands, 20M and 15M included. It sounds like the K1 will tune correctly a strong signal across all bands, but that I'm not getting the expected sensitivity or gain on 20M and 15M. Any suggestions for potential causes and trouble-shooting tips much appreciated. Treat Hull VA3IMO _______________________________________________ Elecraft mailing list Post to: [email protected] 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
