Tnx for reply Ron I tested with dummy load and no difference! I took away kpa100 and running qrp, it sounds very good on all band, even on 10m and more than 10 watts. But with kpa100 and full output there is disdortion on 10m. I noted I have made "Grounding of mic jack" and "RF filter on input of compressor" mods. No KI6WX mods.
73 de juha oh6os If it's on one band, it's usually RF getting into the audio circuits on that band, most commonly through the microphone connector. One other thing that could be a factor with the K2 is that on 10 meters the output is usually the lowest, so it's just possible that you're over-driving the rig with audio on that band to make full output. Are you using an external mic preamplifier? That's a common source of both RF feedback into the audio and for enough audio to over-drive the rig. Even if you have no audio preamplifier, the possibility of RF getting into the mic is the first thing to check. The easiest way to do that is to switch from your antenna to a good dummy load and compare your audio on a monitor receiver. Ron AC7AC Hello, What is the problem? My ssb-transmit has distortion on 10m. The other bands are ok. I have no mods on ksb2. k2/4781 73 de juha oh6os -------------------------------------------------------------- _______________________________________________ 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
