[Elecraft] Help with K3S upgrades

Rick Bates (WA6NHC) wa6nhc at gmail.com
Sat May 25 14:39:06 EDT 2019


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 <donwilh at embarqmail.com> 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, hbjr at optilink.us 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:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html


More information about the Elecraft mailing list