RECEIVER R-392 Part of radio set AN/GRC-19 with frequency range .5 to 32 mc in 1-mc bands using a mechanical digital readout. It receives both AM and CW, and SSB using the BFO for product detection of the signal. It has 3 positions of selectivity 2, 4, and 8kc. It also is unique in the fact that it uses 24VDC on both the plate and filaments. With voltage (28 to 30 VDC) on the plates we have as result improved gain.