All, I'm investigating low power output from my KPA100 and have scanned the LPFs as suggested in the troubleshooting section. My results were as follows:
Using an MFJ259 and having checked that MFJ output freq matches freq on K2 ie MFJ is aligned, I scanned low pass filters. Here is the synopsis of the SWR: 160m - Approx 1.0 from below 1.73MHz to 2.25MHz, climbs to 1.5 at 2.50MHz 80m - Approx 1.0 from 2.00MHz, starts climbing at 3.25MHz but approx 1.1 to 4.00MHz 40m/30m - Approx 1.0 from 5.00MHz, starts climbing at 9.25MHz (1.2), 10.00MHz (1.5), 10.8MHz (1.2), dips at 11.00MHz (1.0) and climbs again 11.26MHz (1.2) and 11.36MHz (1.5) 20m/17m - Approx 1.0 from 13.40MHz, starts climbing at 15.00MHz (1.05), 15.50MHz (1.18), 16.00MHz (1.2), 16.50MHz (1.35), past 17.00MHz over 1.5 15m/12m/10m - Approx 1.5 from 20.00MHz to 25MHz, dips 25.50MHz (1.2), 26.00MHz (1.15), 26.50MHz (1.0), stays down and rises at 28.00MHz (1.2), 28.50MHz (1.2), 29.00MHz (1.5) Has anyone else scanned the filters in this fashion, especially for a KPA delivering full output power/ If so, what were the results, ie I'm looking to see what is considered normal. Did anyone else have LPF issues and what were they? Mike VK1KCK K2 #2599 _______________________________________________ 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
