Phil I have seen the same kind of thing twice, only over roughly twice the frequency range you describe. However on both occasions the only solution was to do a recalibration of the VCO from the config menu. Simply turning the K3/P3 off and on did nothing in my case. I recall that on both occasions the beginning and end of the noise was accompanied by the sound of a relay operating within the K3. I've not had it now for two or three weeks.
I run HRD with the K3/P3 as a logging program. This may be significant, I don't know. 73 Stephen G4SJP On 31/12/2010 00:41, "Phil Hystad" <[email protected]> wrote: > >I came home from work and turned on the K3 and the P3 and then switched >to the CW zone of the 40 meter band. The VFO was about 7.009 as left from >my last visit yesterday. I turned the VFO up just a tiny bit and this >strong, like S9+ broadband noise came through. Funny because I remember >looking at the spectrum of the P3 and I did not see anything there. > >A long story short. I discovered that this noise was being generated by >the K3. I had checked the band with my Icom 756 Pro III and nothing was >there except lots of CW signals. I tuned the Pro III around the same >spots as the K3. So, I rotated the VFO slow up frequency from 7.009 and >at 7.00945 the noise started and continued up to about 7015.5. Now, on >the spectrum this was a good 50 dB over and above my normal noise floor >(sorry, not sure if I am using the right terminology) and it was the same >across the entire spectrum which by the way was set wider then this >frequency range of 7009 to 7015. And, all other CW signals disappeared >and many of them were stronger then this noise level. > >So, if I turned the VFO just past the upper threshold of 7015.5, the >noise disappears entirely and there is nothing but normal display of CW >signals on the spectrum. > >I then decided to power off the K3 and P3. Powered back up and this >weird noise phenomena disappeared. Now, the K3 and P3 is acting normal. > >Anyone see anything like this? > >73, phil, K7PEH >K3 Serial #3799 >______________________________________________________________ >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
