Fred, Don: I ask because I am curious. On any older receiver, calibration at 20 MHz would not guarantee cal below that ( or at any other frequency ). One could be 5 hz high at 30 MHz but 10 hz low at 7 MHz. Why is the K3 different?
Brian Denley KB1VBF Sent from my iPad > On Dec 17, 2016, at 3:43 PM, Fred Jensen <k6...@foothill.net> wrote: > > I guess it depends on how accurate you want your K3 frequency display to be. > I think AM-S will warp the frequency a tiny bit to sync the carrier so that > may not be the best mode. I'd also go as high as you can on WWV. > > Wayne suggested a method that is somewhere on the E-site which I used-- > > Use the highest WWV frequency that you can hear well. USB or LSB, WIDTH to > 500-800 Hz, SHIFT so can hear the carrier beat note [it will be very low]. > CONFIG-->REF CAL, wait for a tone-less minute and adjust REF CAL for exact > zero beat. You'll be counting the pulsations in the background noise as you > come up on zero beat. > > I got mine to about 10 seconds per pulsation on 20 MHz back when there were > sunspots. That's an accuracy of 0.1 Hz and everything below 20 MHz will be > at least that good. > > 73, > > Fred K6DGW > - Sparks NV DM09dn > > - Northern California Contest Club > - CU in the Cal QSO Party 7-8 Oct 2017 > - www.cqp.org > >> On 12/16/2016 5:12 PM, Michael via Elecraft wrote: >> If I set my K3's VFO to WWV at 5.000000 MHz with AM-S on....and I adjust >> "REF CAL" to a number where >> my VFO's frequency readout is exact or near this number +/- maybe a Hertz >> or two. Is this an accurate way to calibrate my K3? >> >> It seems to be very accurate as far as I can tell. >> >> Has anyone used this method? >> >> Michael >> N2ZDB > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to b.den...@comcast.net ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
