[time-nuts] General Radio frequency standard question...

jmfranke at cox.net jmfranke at cox.net
Thu Nov 5 09:56:46 EST 2015

1109, 1109A, or 1109B is correct. The military version is the OS-16/URM-18. The 1109B was set up for line, 100 Hz, 1 kHz, and 10 kHz. I have a few I enjoy. The rear panel has 5 GR connectors. The CRT is a 3DP1, the same as used with the I-152 indicator for the SCR-718 radio altimeter. The I-152 CRT does have a decal altitude scale glued to its face.

John  WA4WDL

---- "Burt I. Weiner" <biwa at att.net> wrote: 
> I'm trying to remember the model number of the GR Comparison Scope - 
> the one that had the anode in the center of the face of the 
> CRT.  Something like an 1109A or B?  Can someone refresh my 
> memory.  At one time I was looking for one of those - maybe I still am.
> Burt, K6OQK
> >Subject: Re: [time-nuts] General Radio frequency standard question
> >
> >There is a GR group on Yahoo but its pretty quiet.
> >
> >I joined when I started restoring one of the GR early synthesizers a 1161A,
> >the a 1115A
> >oscillator (the one where the dewer got destroyed in shipping).
> Burt I. Weiner Associates
> Broadcast Technical Services
> Glendale, California  U.S.A.
> biwa at att.net
> www.biwa.cc
> K6OQK 
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