[R-390] Ramblings on Calibration - was: HP 8640B

[mikea]

On Thu, Apr 07, 2005 at 03:23:34PM -0400, Veenstra, Lester wrote:
> By the way, there is another similar process, that can give significant
> accuracy, that I have used, particularly for setting internal ref of a
> synth receiver. On a good day, on a good freq, at the right time, set up
> the R-390 (of course) in AM detection mode, on WWV with audio to scope.
> 
> Set up SSB receiver under test to same WWV carrier freq, with audio also
> to scope. (Dual trace sync to one trace, or XY, what ever you prefer)
> 
> When the 600 Hz tone is broadcast, adjust frequency standard for no
> drift or 1:1 ellipse.

Which reminds me: my WWV receiver has a scope built in, with provision for
doing precisely that procedure using audio from its own internal audio and
audio from another RX. Cool -- and glowbug -- device. I thought I had the
manufacturer and model in my PDA, but I don't, and I'm at work right now.
*sigh*

-- 
Mike Andrews, W5EGO
mikea at mikea.ath.cx
Tired old sysadmin