I think this is the known "feature" described by Wayne in: http://www.ac6rm.net/mailarchive/html/elecraft-list/2000-03/msg01007.html
73 Kevin w9cf >My K2 also produces clicks on 40m which disappear if the antenna >is disconnected or turned away from strong BC stations above 7100 >kHz. Running CAL PLL has not cured the problem, and I have since found >the same problem on 15m. It might exist on other bands but I have not >had the time to check. I have a *suspicion* that strong signals from the >antenna / banspass filters reach the VCO and Reference oscillator area >of the RF board by some direct route, not via the Preamp / attenuator / >mixer and momentarily 'upset' the VCO causing the click. The VCO (VFO) >could be upset if some product produced by multiple mixing attempted to >take over control of the loop, sometimes a problem with locked loops. But >I cannot confirm this yet due to lack of time at the moment. > >73, >Geoff >GM4ESD _______________________________________________ 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