[time-nuts] Nifty old GR OCXO? (looking for information on 693-A SYNCRO-CLOCK)

[Stan Searing]

While we're on the old GR subject...
I have a General Radio 693-A "syncro-clock and amplifiers" that contains
a GR model 611 syncro-clock module.  I think the oscillator and power supply
are separate (and I don't have them).  Does anyone have any information on
the 693-A?
(Copies of a manual would be great!)

I'd like to get it running within a decade, and given the number of
projects I have going at once, I should start soon.

Don't know if this helps, but there is a decal on that back that says:

THIS INSTRUMENT IS LICENSED UNDER
PATENTS OF THE AMERICAN TELEPHONE
AND TELEGRAPH COMPANY SOLEY FOR
UTILIZATION IN RESEARCH, INVESTIGA-
TION, MEASUREMENT, TESTING, INTRUC-
TION, AND DEVELOPMENT WORK IN PURE
AND APPLIED SCIENCE.


Stan