Hi
A few more details:
1) The "oven" is a heated pine box.
2) The standard crystal is a big heavy quartz bar
3) I believe you can flip the bar over, I'm not remembering exactly
why you want to do that
That all assumes it's the one I remember. They were a standard part of
things like LM freq. meter calibration setups.
Definitely a very cool "state of the art" standard from days gone by.
Bob
On Sep 10, 2009, at 7:02 PM, Don Latham wrote:
New Topic:
In case anyone on the list is interested, a friend (really!) has a
complete Navy General Radio LR-1 frequency standard with original
manual
that he wants out of the way. It's a WW2 standard with a 100 kHz
ovenized
crystal oscillator and an interpolator/heterodyne scheme. Prob is the
thing weighs about 150 lb. Remember that electronics was sold by the
pound
to the armed forces in the good ol' days? I took apart a "mobile"
SCR-545
radar oncet and it had cast brass chassis (!).
Anyhow, let me know if you're interested...
Don
--
Dr. Don Latham AJ7LL
Six Mile Systems LLP
17850 Six Mile Road
POB 134
Huson, MT, 59846
VOX 406-626-4304
www.lightningforensics.com
www.sixmilesystems.com
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