[Milsurplus] other US-9 differences

[Ray Fantini]

The Russian US-9 also has a front panel mounted fuse and two different style headphone jacks to accommodate the ¼ inch western style connector or the two pin jack that most Russian radios used up to the seventies. The US -9 was replaced by the RPS receiver that used almost the same tube line up as a BC-348Q with the addition of a dual triode audio and calibrator oscillator that was the exact Russian version of a 6SN7 and a 7 pin HFO that was there equal of a 6C4, that also had a VR tube, period reduction tuning, the same variable IF filter that was on most ground radios and a integrated tube tester. Interesting thing is that although the US-9 was removed from active service the R-807, RSB-70 transmitters that were copies of the ART-13 were still in service well into the seventies and eighties with the RPS/RSB pairs being spotted in use as late 2001.

RF