Sverre: This fix (that you describe) worked for me on a K2 that I built within the past year. The LOW BFO freq was just slightly high and putting a low value cap as you describe lowered the LOW freq to within specs, didn't change the high BFO freq, and did not cause any instability. I don't remember the exact value cap I used and the K2 is no longer here for me to look at. 73, Ken K3IU
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Sverre Holm Sent: Thursday, December 08, 2005 4:07 PM To: [EMAIL PROTECTED]; elecraft@mailman.qth.net Subject: RE: RE: [Elecraft] K2 BFO Test > -----Original Message----- > > The preferred method of padding the BFO capacitors is to maintain the > ratio between C173 and C174 by paralleling them with capacitors. A > single capacitor from the junction to ground will be in parallel with > the series combination of > C173 and the varactor D38 and could make the BFO less stable than it > should be. > Don, How about a single capacitor (1-4 pF) from the junction of the crystals and the L33 inductor as in http://www.ac6rm.net/mailarchive/html/elecraft-list/2005-08/msg00562.html? Does that create potential stability problems also? I've got this link on my K2 mods page and just wanted to make sure I can recommend it and keep it there. I have never had any problems with BFO range myself so I have no personal experience with this myself. 73 Sverre LA3ZA http://www.qslnet.de/la3za/ _______________________________________________ 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 _______________________________________________ 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
