[Elecraft] K2 Frequency Alignment

[Don Wilhelm]

George,

I hope I inferred something that you did not mean in your reference to 400
Hz when calibrating your PRO2 - the tones that WWV transmit are 500 or 600
Hz depending on which minute - 440 Hz is transmitted at 2 minutes past the
hour.  What means 'deviation from 400 Hz'???

For anyone needing the WWV schedule format, look at:
http://www.boulder.nist.gov/timefreq/stations/iform.html - it will tell you
what the audio tones are supposed to be when you look at them on Spectrogram
or Digipan or something else.

73,
Don W3FPR


----- Original Message -----

| I previously calibrate the PRO2 with WWV by first measuring the WWV audio
| tone in AM mode to verify the soundcard/program operation. Any deviation
| from  400 Hz or whatever is noted as a correction factor. Then I tune to
WWV
| at 10.001 MHz and look at the 1000 Hz trace. Any departure from exactly
1000
| Hz +/- the soundcard factor is the dial calibration error of the PRO2
which
| is then factored into the 4 MHz calibration. I usually keep the PRO2 to
| within 0.5 Hz of WWV as measured in this manner.
|
|