I posted a brief query a week or so ago about the K3 VOX and a couple complaints I had received about it from hams on 6 meters. Since then, I've worked with a couple of reliable local stations on the air to try to further characterize what they are hearing.
They all say that when the VOX "makes" at the beginning of speech, they hear a distinct "clack" sound which is variously described as the sound of a frame relay closing or the sound of an old-fashioned light switch being flicked on. This sound happens on every "make" of the VOX circuit, but does not happen on the "break" when speech pauses or ends. Some say the sound is not terribly objectionable, while others say it is awful. How "bad" it is, I'm sure, is just a matter of personal opinion -- but the sound is definitely happening, everyone agrees on that. I have had stations reduce their RF gain to the point where there is no AGC action on receive, and the sound is still there. And it happens irrespective of the various VOX adjustment settings, so far as I can tell. Since there are no mechanical parts involved in the K3 VOX, the sound seems likely to be generated in the firmware as a result of the timing delay manipulation described previously. Can this be looked into, Wayne/Lyle? I've put VOX back on the shelf, figuratively, until this issue has been resolved. Thanks, Bill W5WVO _______________________________________________ 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