You can just tweak the BFO settings I think, that's what I did. I did not have anything change with the kpa100, and I have had the k2 back and forth as a K2 and a k2/100, and the filter stuff did not change...
I have not had any long qso's, but in testing into the dummy load, I don't find my heat sink getting very warm, let alone hot. I was careful in setting the bias so that just the initial readings were what I went by. I set my fan to be on low all the time, its silent so why not? Never had it go to high speed... Brett N2DTS > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of David Fleming > Sent: Wednesday, April 25, 2007 11:12 AM > To: [email protected] > Subject: [Elecraft] K2/100 Filter Question > > > I noticed last night that when I change filters from FL1 (opt1) to FL2 > (700hz) in CW mode, the received signal shifts down in frequency by > about 20Hz. Likewise, in CW-N mode, it shifts up by 20Hz. The > other two > filters are right with FL1. The shift only occurs with FL2. I didn't > notice this prior to installing the KPA100. I had the filters setup > perfectly using Spectrogram, and all of the settings are just as they > were after the initial setup. Will I need to go through the entire > process again? Or is there a way to get only FL2 back on frequency? > > Also, I assume (hope) that it is normal for the heat-sink to get quite > HOT after a typical qso at 25wpm? Not spit sizzling hot, but > hot enough > to where I can't leave my hand on it for more than a second or two. I > worry that I don't have the bias set exactly where it should be. It's > difficult to set the bias current accurately because the current rises > so rapidly after entering TUNE mode. And the current at the very start > varies depending on how warm the transistors are at the time - if that > makes sense. Just a little paranoid. I don't want to fry my finals. > > Thanks! > > -David W4SMT > > _______________________________________________ > 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
