Ron and Don, I experienced the same issue this weekend but the problem was not as bad. My BFO Lo was 4912.83 with a range of about 4.5MHz. One of the solutions mentioned in the Troubleshooting paragraph was to check the 41uH BFO inductor, and if necessary, add a turn or two. I had noticed that one of the two leads had popped out of its adhesive where it exited the toroid so I speculated that it had come unwound by one turn. I added one turn to the inductor and now my BFO Lo is right at 4912.71. Unless more knowledgable folks say otherwise, I'm leaving it there. 73 Rob KC6ROC K2#5924
David Fleming <[EMAIL PROTECTED]> wrote: >Hi Ron. > >I had the exact same problem. My numbers were very close to yours. >Rather than replacing the crystals, I added a 10pf capacitor from the >junction of the crystals and C174 to ground. That brought BFO Lo down >to where it needed to be. Sure beats waiting on new crystals, and >there's still no guarantee that new crystals will fix the problem. You >will need to get BFO Lo down in order to properly perform CAL FIL. > > >Ron Hahn wrote: > >> BFO Hi : 4917.62 >= 4916.3 >> BFO Lo : 4913.59 <= 4912.7 !!! >> Range : 4.03 >= 3.6kHz > >_______________________________________________ >Elecraft mailing list >Post to: [email protected] >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 > _______________________________________________ Elecraft mailing list Post to: [email protected] 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
