[Elecraft] Help with K3S upgrades

[Don Wilhelm]

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!
>