[Elecraft] Ref Osc calibration question

[Don Wilhelm]

  Mike,

The thing that is wrong with that logic is that AM-S has an "AFC" 
associated with it (capture range).  So the frequency that AM-S can 
capture will not necessarily show the actual carrier frequency.

If you cannot determine the beat frequency, I would suggest you first 
use an audio spectrum analyzer like Spectrogram (download at 
www.n0ss.net) or SpectrumLab in SSB mode to observe the tones 
transmitted by WWV - 500 Hz and 600 Hz on alternate minutes except for 
silent minutes and one minute of each hour when 440 Hz is transmitted 
(the one second tone at each minute is 1000 Hz).

Once you get the frequency close to correct using the above method, then 
try the "beat note" method in the manual - you should be close enough to 
hear the beat in CW mode - just adjust until the "wow-wow" tone is as 
slow as you can get it.

73,
Don W3FPR

On 1/30/2011 5:12 PM, w0ih wrote:
> I noticed that when I went to AM-S (AM Sync, AutoTracking), that the
> frequency showed:
>    10.000.010
>
> So, I figure that the Reference Oscillator was off a bit.  So I tweeked the
> oscillator slightly until the frequency showed 10.000.000 when I when out of
> the Config Menu.
>
> Is there anything wrong with this logic?
>
>    I couldn't seem to hear beat oscillator when I get close to the 10 Mhz
> signal to adjust it by the manual.
>
> Mike