[R-1051] Easy frequency standard calibration

[paul swed]

Good technique
Thanks

On Fri, Nov 16, 2012 at 5:44 PM, David Wise <David_Wise at phoenix.com> wrote:

> Only three prerequisites:
>
> 1. Strong clear reception of one of the WWV signals
>
> 2. A working radio
>
> 3. A dual-trace oscilloscope
>
> Put the radio in ISB mode and tune in WWV.
> Route USB to one scope channel, LSB to the other.
> Trigger the scope on channel 1 and adjust for a stable trace.
> Adjust the frequency standard so the channel 2 trace is stationary.
>
> This avoids the problem of infrasonic beat notes, and you can
> do it without a GPSDO or other high-accuracy standard.
>
> Cheers,
> Dave Wise
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