By ear is very close but if you already have WSJT-X, there is a calibrate mode for the last few Hertz.
Rick WA6NHC Smell Czech correction happen > On May 25, 2019, at 11:08 AM, Don Wilhelm <[email protected]> wrote: > > Hank, > > You don't need a highly accurate frequency counter. You can get closer with > the beat note method. > > You can use an audio spectrum analyzer (like Spectrogram or SpectrumLab) > running on your computer and the K3S rear headphone jack connected to your > soundcard Line In. > > That will give you a visual display. When you turn on SPOT, if the two audio > frequencies are far enough apart, you will see two both of them. > When both frequencies are quite close, they will appear as one signal. > When they are VERY close, you will see the "signal" begin to oscillate in > amplitude - when that oscillation slows to zero, that is the beat point you > are seeking. In practice it is difficult to get it to exactly zero, but get > it as slow as possible - one or two oscillations each minute is practical > using that method. > > If you need Spectrogram (Windows application), go to my website www.w3fpr.com > and scroll near the bottom of the opening page to find the links. Those are > internal links on my website, and the files have been thoroughly scrubbed for > virus - although Norton does not like them because they do not have a large > enough user list for that application. > > 73, > Don W3FPR > >> On 5/25/2019 1:23 PM, [email protected] wrote: >> I have just installed the 1 PPM TXCO in my K3S. I bought the K3S last >> October as a kit and have installed many options since then. >> One thing I'm concerned with is the reference calibration. Without a good >> frequency counter, I'm using WWV on 15Mhz and using beat cancelation. My >> ears are pretty good, but no match for a good frequency counter. >> Any guys in the NW GA area (Tennessee, Alabama, and North Carolina area >> really) that would be willing to help me set that reference calibration with >> a good counter? I'd be willing to pay you for your time! > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
