Posted by
Don Wilhelm-3 on
Jan 22, 2005; 5:43pm
URL: http://elecraft.85.s1.nabble.com/WWV-tones-and-CW-reverse-tp372927p372929.html
Bill,
200 Hz calibration error is quite a bit IMHO - but each to his own.
Just so folks don't develop a wrong impression, I usually expect less than
50 Hz error with nothing more than a quick check of the 4 MHz reference by
comparing the TP3 output using an external counter and the internal CAL FCTR
(both measuring the TP3 frequency)- just turn the capacitor until both
counter read the same.
Then after everything is built, I fine tune using the N6KR method with
Spectrogram as my guide to properly hearing the 500 and 600 Hz tones that
WWV transmits. I expect less than 20 Hz error after completing that (if
your results are not that good, my first question is 'Did you do CAL PLL and
also run CAL FIL to write new BFO values?, and were you certain of WWV
zero-beat?'
73,
Don W3FPR
----- Original Message -----
>
> I've never understood the obsession with exact frequency readouts with the
> K2. Even if you get C22 exactly on 4.0 MHz, the K2 calibration may vary a
> bit. If you are within 200 Hz on all bands, I wouldn't worry about it.
>
>
> Bill Coleman, AA4LR, PP-ASEL Mail:
[hidden email]
> Quote: "Not within a thousand years will man ever fly!"
> -- Wilbur Wright, 1901
>
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