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 Post subject: Military SG-377A/URM-127A Signal Generator Manual Needed
PostPosted: May Tue 17, 2022 1:36 am 
Member

Joined: Feb Sat 11, 2012 12:44 am
Posts: 358
Location: Islip, Long Island, NY
Greetings to the forum.
I working on a Military SG-377A/URM-127A Signal Generator and I could use a schematic or the manual. I'm pretty sure its the TM 11-6625-2725-14 military manual. Keep in mind this is the "A" version. Its not the same as the earlier units. This generator does not have the frequency meter. I have the earlier manual not the same. This looks to be built in the 1980's.
Let me know what you have.
Thanks.
Jerry
W2JI


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SG-377A URM-127A Signal Generator.jpg
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 Post subject: Re: Military SG-377A/URM-127A Signal Generator Manual Needed
PostPosted: May Tue 17, 2022 1:51 am 
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Joined: Jan Tue 10, 2012 8:39 am
Posts: 3259
That resembles some of the early HP audio oscillators. A few of them had meters and I am guessing this one is solid state due to its size. It's like the old tube unit HP650A but that one goes to 10 MHz.


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 Post subject: Re: Military SG-377A/URM-127A Signal Generator Manual Needed
PostPosted: May Tue 17, 2022 11:01 pm 
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Joined: Feb Fri 22, 2008 3:28 am
Posts: 640
Fair Radio has the "A" manual for sale for $21 it appears. This is the first "A" version I've seen a picture of, and I've never seen one surplus. The 127 (non-A) is fairly common.


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 Post subject: Re: Military SG-377A/URM-127A Signal Generator Manual Needed
PostPosted: May Sun 22, 2022 2:18 pm 
Member

Joined: Feb Sat 11, 2012 12:44 am
Posts: 358
Location: Islip, Long Island, NY
Thanks for the response.
The signal generator has been repaired using information from the early manual.
I'd would like to get a copy of the A version.
Thanks.
Jerry
W2JI


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