I have just completed "Test and Alignment, Stage II" of K2 #4137. Everything seems to have gone very well -- all Voltages were in range and it seemed that everything worked as it should. However, I've now run across a strange problem.
I find that clicks/pops occur when I tune the VFO in the presence of strong signals. For instance, if I set the XG1 for 50uV and tune the VFO up and down from the XG1's frequency of 7040kHz, I hear clicks/pops (about S-5/6) when the VFO transitions the following boundaries: 7015.79/80 (click/pop getting very weak here) 7020.79/80 7025.79/80 7030.79/80 7035.79/80 7040.79/80 (XG1's signal is theoretically centered at 7040.00) 7045.79/80 7050.79/80 7055.79/80 (clock/pop getting very weak here) The clicks/pops occur when I roll the VFO's last two digits back-and-fourth across the .79/.80 boundary. The clicks/pops do not occur when I turn off the XG1. I have also noticed that I can hear these clicks/pops when I get up around 7300 and strong broadcast stations are present. While I've seen a few mentions of this (or similar problems) in the archives, I've never really seen any explanation or cure. Any ideas? Thanks, Michael N9BDF K2 #4137 PS The "Amateur Radio Emergency Communications Consistency Act" (HR 1478) and the "Amateur Radio Spectrum Protection Act" (HR 713 & S. 537) are in Congress. Please contact your Congressmen to ask for their support of these bills! See the following ARRL link for details: http://www.arrl.org/govrelations/ <http://www.arrl.org/govrelations/> _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com