[time-nuts] General Radio Model 723D Precision Oscillator (Tuning Fork)

[Don]

> I was fortunate to find a vintage, General Radio (GR) Model 723D
> Precision Oscillator (tuning fork).
> 
> The exceptional wooden case is as 'exciting' to look at as is the
> mechanical tuning fork inside (400Hz).
> 
> As it is ac powered, I'll need to recap it before I turn it on.
>  Then, we can test for accuracy! (sic).
> 
> A real class-act, 'time-nut' oscillator from the last century,
> predating crystals. 
> 
> Don
> 
> Don Lewis
> Austin, TX
> N5CID
> 
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