[Milsurplus] SG-297 / URM-103 Signal Generator info sought

Hubert Miller Kargo_cult at msn.com
Sun Apr 13 20:32:18 EDT 2025


At the yesterday NWVRS swapmeet in Aurora, Oregon, i was given a SG-297 / URM-103 signal generator. This thing does WEIGH. The cabinet is proof against small
caliber weapons. It is a CW / FM signal generator for 18 to 80 MHz; hmmm.....not very useful, and the ( utility / ( size + weight ) )  factor would  seem to be not good.
The specs say metered output down to 0.05 uV, which is very hard to beat, to say the least. This is from early 1960s and IS transistors.  A real manual seems to be
unobtainium. I looked at "Combat Index" and "Integrated Publishing" and i conclude these websites can deliver a page or two of the OPERATOR manual in exchange
for helping spam merchants to trap you.

Also saw a RAL RAK pair there, $10 each. I am so glad someone bought them. They would have been given free to me also and i would have taken them just to pass
them on somehow. The interesting thing was, the logging charts were full of station listings. I should have photographed that ! But i was sleep deprived and not fully
thinking.

Any ideas?
My options i'm thinking of so far, is change the freq range down some; utilize only the attentuator section somehow; give it away.
thanks-
Hue Miller
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