Gentlemen… Thank you for your help!! I tried both Bob and Don’s method after letting the K3S warm up for about 30 minutes tuned into a SW broadcast.
After using Bob’s CWT method on 20 Mhz (conditions finally improved enough to get a good S9+ signal), I could tune to any strong broadcast signal and use the CWT and SPOT function and the frequency display would be perfect. Tuning 50 Hz away – either side – and pressing SPOT would bring the frequency back to the correct frequency. I tried Don’s method using. I regularly check my soundcard calibration using FLDIGI’s method. I’m using the Timewave PK-232sc+ for a soundcard. It is very stable – checking it today it required no tweaking. After running the spectrum analyzer, the tuning was dead-on as far as the waterfall showed. Both great ideas!!!! Thanks again for all of the replies. I learned more about my radio today! Hank K4HYJ K3S, P3, KX3 From: Bob McGraw K4TAX Sent: Saturday, May 25, 2019 3:19 PM To: [email protected] Subject: Re: [Elecraft] Help with K3S upgrades Yes that is correct.........but one needs to make sure the sound card calibration is correct. I prefer to use CW mode with CWT active . Tune the radio to one of the WWV frequencies. Thn press and release SPOT. This will match the sidetone to the WWV carrier and adjust the radio to the correct frequency. If for example, one tunes to 15.000.000 and presses SPOT the radio may then move to 15.000.002. If so, adjust the Ref Cal down about 3 or 4 Hz. And do the procedure again. It will take 3 or 4 times and adjustments to get the radio "dead nuts on". Once done, then tune up from WWV or down from WWV by 10 to 20 Hz and press SPOT again. The radio should come to 15.000.000. Thus no listening, no zero beating, no computer, no external software is needed. Everything is referenced to the internal Reference. This also assures the sidetone frequency is accurate at the user selected frequency. 73 Bob, K4TAX On 5/25/2019 1:39 PM, Rick Bates (WA6NHC) wrote: > 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 > ______________________________________________________________ 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
