[Collins] Calibrator Xtal

[Gerald]

On Fri, 2005-08-26 at 14:45 -0500, Rev. Don Sanders wrote:
> I have an calib xtal by Bliley that says Collins BG12A 1.000000 MC 290 3435
> 009 on the glass.
> Does anyone know what unit this was used in and what pins on the octal
> bottom are used.
> The Box Says:
> 5955 566 6623
> Crystal Unit
> PN 2903435009
> BG12A   1000KC
> 1 each
> DSA-9-8207
> A-2/64
> Healthfully yours,
>                           DON W4BWS

5855 566 6623 is a federal stock number. 290-3435-009 is the Collins
part number. The DSA-9-8207 reinforces the federal supply system. So its
government, probably military. Could be a synthesizer reference or a
calibrator crystal. Glass enclosed crystals are above the normal quality
for much radio gear.

I have no idea what pins were used to connect the crystal, I'm sure that
I'd have little trouble with signal generator and scope and a couple
short clip leads or a crystal oscillator with short clip leads trying
the connections. Odds are high that the two pins are as far apart as
possible, e.g. across the center post of the octal base.
-- 
73, Jerry, K0CQ, Technical Advisor to the CRA
All content copyright Dr. Gerald N. Johnson, electrical engineer