Hi Peter
Yes, I too have the "marching noise peaks", but mine go away when I disconnect the antenna from my K3. My problem is the pips that look just like a signal but move across the screen at a either the same pace as the cursor, or at some multiple of its pace. I remember Eric saying that these are harmonics from internal oscillators in the K3. I'm wondering if anyone has tackled the problem of reducing or eliminating these "birdies". thanks for the reply and Merry Christmas, Peter. 73, Bob N6WG The Little Station with Attitude ----- Original Message ----- From: "Peter Torry" <peter_to...@btopenworld.com> To: Elecraft@mailman.qth.net Sent: Monday, December 19, 2011 9:53:48 AM Subject: Re: [Elecraft] P3 birdies in display Hi Bob, I too have had noise peaks pass from left to right across the screen of the P3 leaving a diagonal waterfall trace. First a small one, then one at +40 dB above the reference level then another small one, all moving slowly across the screen. Nothing is heard on the K3 and occurs even when the P3 is disconnected from the K3 and is therefore internally generated. I cured the noise peaks by ensuring all the case connections were clean, the fixing screws reasonably tight and re installed all of the ribbon and coax connectors in the P3. The screws holding the display to the front panel made the most difference as I was careful not to over tighten them originally !! I also have re radiation of 19kHz noise on 2m that still comes and goes even though I have filtered the supply lead. 73 Peter G3SMT ________________________________ From: "n...@comcast.net" <n...@comcast.net> To: elecraft@mailman.qth.net Sent: Saturday, 17 December 2011, 17:13 Subject: [Elecraft] P3 birdies in display I’ve dug through the archives looking for info on fixing this. So far no luck. I understand the birdies I’m seeing are harmonics from oscillators within the K3. Has anyone done any experiments in the K3 to reduce these birdies? Maybe moving cables, or adding ground straps somewhere? Thanks and 73 Bob N6WG The Little Station with Attitude ______________________________________________________________ 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 ______________________________________________________________ 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 ______________________________________________________________ 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
