[Elecraft] K3 question/problem

[Rick Kunath]

David Wilburn wrote:
> I have had a great deal up success using Spectrogram as Don describes.
> This page is very helpful for understanding what goes on, minute by
> minute, with the WWV signal.
> 
> http://tf.nist.gov/stations/iform.html 
> -  

<Snipped>

>>
>> I consider the above method more accurate than using a frequency counter 
>> of unknown calibration.  Of course the audible zero-beat method works 
>> fine too, but there is always the possibility of confusion about whether 
>> one is zeroing the carrier or one of the transmitted tones.  The warning 
>> about being certain you are zeroing the carrier goes back to the days 
>> when we were calibrating our secondary frequency standards - one must 
>> wait for a silent minute to be certain we zero the carrier.

This is assuming that the sampling rate (or re-sampling error rate) 
error in the sound card has been properly measured and a correction 
factor entered into the audio spectrum analyzer application.

Rick Kunath, k9ao