Don, thanks for the great idea of using the spectrogram and WWV. That's another thing I did not think of.
I heard some great slow CW on both 80 and 40 meters tonight! Brett N2DTS > -----Original Message----- > From: Don Wilhelm [mailto:[EMAIL PROTECTED] > Sent: Monday, April 16, 2007 7:49 PM > To: Brett gazdzinski > Cc: [email protected] > Subject: Re: [Elecraft] K2 frequency adjustment > > Brett, > > Since you can probably hear 10 MHz WWV at your QTH, why not use that > signal in LSB or USB to set C22 very accurately. The method > to do that > is on the Elecraft website on the Builder's Resource page. > > I also recommend that one use Spectrogram to tell when WWV is tuned > 'just right' - I place markers at 500 and 600 Hz and watch as the > transmitted tones line up with the markers. Once you get it > right, you > can expect proper dial calibration within 20 Hz typically. The whole > procedure is in the K2 Dial Calibration article on my website > http://w3fpr.qrpradio.com > > When you are done, if the K2 tunes in WWV in LSB or USB mode with > accuracy, all bands will also be accurate. Then if you find yourself > off frequency, you can blame the other radio. > > 73, > Don W3FPR > > Brett gazdzinski wrote: > > Funny, I had today off and decided to do the same thing. > > I used the 756 pro as a source, did the adjustment, redid > > all the filter bfo settings, and went from 4000 Hz off to about 500, > > but I could not tell as I could not zero beat and did not think > > of changing the filter. > > > > When both the 756 and the K2 are tuned to the same frequency, > > they hear each other, but at maybe 400 or 500 Hz differences. > > > > Close enough for me anyway... > > > > Last time I did my filters, I paid a lot of attention > > on getting things to sound the same between filters and > > CW normal and reversed. > > Tune a signal in spot on the nose (same as sidetone) and > > switching between cw normal and reverse does not change the pitch. > > > > That is useful if you have qrm on one side. > > > > Listening on CW or ssb and changing filters does not change the > > pitch any, which is nice... > > > > The radio really does work well! > > I enjoy listening to cw (at speeds to fast for me to copy) > > for hours! ssb sounds good in the headphones, the little speaker > > inside the K2 does not really cut it for ssb... > > > > Brett > > N2DTS > _______________________________________________ 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
