The buzzing I noticed on my K3 is the top cover vibrating against the top of the PA shield. There should be a greater clearance between the two.
I have been waiting until there is a reason to disassemble my K3, so I can take a file to the metalwork. That is what I would do if I were building another one from scratch. Also the ATU board makes intermittent contact with the cover. 73 Stewart G3RXQ On Sun, 10 Aug 2008 21:47:14 -0600, Fern Rivard wrote: > I have a K3 serial #412 which has always had an annoying resonance from the internals > of the radio cabinet somewheres when using the internal speaker. I thought that it may > have been the top lid which did that so I tried to isolate the top lid by temporarily > adding some electrical tape between the top and when it meets the the top of the radio. > However, that did NOT accomplish anything for me. Has anyone found a permanent cure for > that annoying resonance? > This afternoon I took my K3 for a bit of "Show and Tell" to a get together picnic that > our local ham club put on this afternoon. Not having a spare antenna conveniently > laying around, I just took a small roll of telephone extension wire "4 conductor in it) > so I soldered all four wire together with enough solder residue so that it would just > fit inside the SO-239 ant#1 rear connector. I guestimate that I had an approximate > lenght of 35 feet or so of wire that I strung between trees. I had the K3 on a padded > surface on the hood of my vehicle to make it handy for the audience to see it. I tried > the automatic antenna tuner on all bands from 80 to 10 meters with a resultant perfect > match from 75 meters all the way to 10 meters with 1:0 to 1 match. Unfortunately band > conditios were not very good today. > > 73 from Fern VE7GZ > > > _______________________________________________ > 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 _______________________________________________ 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
