[time-nuts] General Radio LR-1

Bob Camp lists at cq.nu
Thu Sep 10 23:08:21 UTC 2009


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.


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
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.

More information about the time-nuts mailing list