Do the fans turn on when the K3 is in TX test mode? On Mon, Jun 27, 2011 at 10:21 AM, Guy Olinger K2AV <[email protected]>wrote:
> Check to make sure that the cables routed in front of the fans are not > touching. A light touch will result in a sound like that. It will > change or go away with the fan speed. > > 73, Guy. > > On Mon, Jun 27, 2011 at 9:10 AM, Adi Andrei <[email protected]> > wrote: > > I have the same thing happening, similar series K3 (5k something) , also > assembled in March. > > > > Adi > > 2E0TTX > > > > > > On 27/06/2011 13:38, Joe Harris wrote: > >> I have very similar symptoms in my K3/100 (SN 5284) that I assembled in > >> March. It makes the sound even if I am in TX test mode. Again, no > >> performance issues, just a slightly bothersome squeal / whine. > >> > >> > >> > >> On Sun, Jun 26, 2011 at 8:23 PM, Geoffrey Wolf<[email protected] > >wrote: > >> > >>> First off it was a great Field Day and my new K3 impressed me extremely > not > >>> only in performance but in it's functionality. > >>> > >>> To kick off Field Day I installed a new KPA100 into the K3. I did all > the > >>> necessary TX gain calibrations using a dummy load. > >>> > >>> One thing I noticed immediately was that I was hearing a very high > pitched > >>> squeal coming from either the PA board or possibly the KIO3 (the board > the > >>> amp plugs into). The squeal seems to vary in frequency each time the > >>> transmitter keys up (can only hear it when the radio is in TX). The > squeal > >>> is not very loud but its loud enough for me to hear it if I listen > closely. > >>> It doesn't seem to be power related. The squeal is there even if the > radio > >>> is in TX but no power going out (RF Pwr set to 0W). The closest thing I > can > >>> compare the sound to is perhaps a tiny leak in an air hose. Is this > typical > >>> of a bad solder joint or something? > >>> > >>> This squeal only pertains to the new KPA100 installation. Before the > amp > >>> was installed I didn't hear a thing. > >>> > >>> I should also note that nothing appears to be affecting performance. > Puts > >>> out 100 watts no problem. Clean modulation, etc. > >>> > >>> -------------- > >>> Geoffrey Wolf > >>> AB3LS (Amateur Radio Callsign) > >>> University of Pittsburgh '14 > >>> [email protected] > >>> [email protected] > >>> > >>> ______________________________________________________________ > >>> Elecraft mailing list > >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft > >>> Help: http://mailman.qth.net/mmfaq.htm > >>> Post: mailto:[email protected] > >>> > >>> This list hosted by: http://www.qsl.net > >>> Please help support this email list: http://www.qsl.net/donate.html > >>> > >> > >> > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:[email protected] > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > -- Joe Harris, N1QD ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
