I recently installed the K144XV 2meter converter in my K3. I could work strong stations on 2m with no problem, but weak stations were swamped by noise which was S9 over the entire band. My P3 was showing that the noise consisted of carriers every 19KHz with lots of buzzy noise in-between. I soon found the source of the noise. It was the P3 ! When I turned the P3 power off, the noise completely disappeared. With the P3 on and the antenna replaced with a dummy load, the noise also all but disappeared. When I removed the RS232 cable and the IF cable from the P3, leaving only the power cable, the noise persisted at the same strength. So it appears that the P3 box is radiating this noise directly into my antenna. My antenna is a 2meter ground plane on the roof of my shack. It is about 8 feet from the P3. Obviously a solution would be to move my 2 meter antenna well away from the shack. I was not able to find any mention of this problem in the archives. Is there something wrong wi th my particular P3 or do they all do this?
Roger Crofts, VK4YB ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
