HiSince you are finding that the peaks diminish when the cables are removed it would seem that the cables are picking up signals from your environment. What happens if everything in your house is turned off except for the px3?I know my p3 will show fixed peaks that don't change with tuning if I have certain other equipment on that is close to the px3.If you find a culprit try putting ferrite on the cables.73
Sent from my Samsung Galaxy smartphone. -------- Original message --------From: Larry Naumann <n...@att.net> Date: 2016-09-09 11:31 AM (GMT-05:00) To: donw...@embarqmail.com, elecraft@mailman.qth.net Subject: Re: [Elecraft] PX3: Possible problem with display Don Thanks for the suggestion but that does not fix/improve the situation. Looking at it further I also have spikes at roughly 23, 30 and 52Khz above and below my cursor. The 52 Khz signal is at S4 the other two are about S2. I can turn on the PX3 and look at the display with no antenna connected and see these spikes on every band. If I disconnect the cables to the KX3 the signals are still there but go down to S1 in strength. I have even tried running both on separate battery supplies but the problem is the same. The spikes are there even if I disconnect the I/Q cable but the spikes are very small, as soon as the I/Q cable is plugged in the spikes increase. Larry n0sa On 9/9/2016 9:22 AM, Don Wilhelm wrote: > Larry, > > I suspect hum, buzz, and noise pickup on the RX I/Q cable shield > between the KX3 and the PX3. > Try "Bonding" - run a heavy wire or strap between the KX3 and the PX3 > in parallel with the RX I/Q cable. The shield from old RG-8 coax > works well. > > 73, > Don W3FPR > > On 9/9/2016 10:12 AM, Larry Naumann wrote: >> I have just recently noticed that there is a continual spike that >> follows my cursor. It is internally generated. In CW mode it is away >> from my tuned signal by the amount of my CW side tone setting and can >> be switched to above or below the cursor depending on if I am in CW >> or CW-R. >> These spikes occur with no antenna connected and are S4 to S5 in >> strength depending on band. >> I did the Opposite Sideband Rejection adjustment but show no >> improvement. >> I think something is either set wrong or I have an issue. >> Any help or ideas are appreciated. >> > > ______________________________________________________________ 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 Message delivered to tom...@videotron.ca ______________________________________________________________ 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 Message delivered to arch...@mail-archive.com
