[Elecraft] K2 Frequency Alignment

Thu Aug 14 19:17:00 2003

----- Original Message ----- 
From: "Don Wilhelm" <[email protected]>
To: "George, W5YR" <[email protected]>; <[email protected]>; "'Rich Lentz'"
<[email protected]>; "'Elecraft Reflector'" <[email protected]>
Sent: Sunday, July 27, 2003 12:31 PM
Subject: Re: [Elecraft] K2 Frequency Alignment


> 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.
> |
> |
>
>
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