Hi Rich and the list, The RBG is described, briefly, as: RBG Radio receiver, 0.54 - 31 MHz, 6 bands; includes CHC-46140 rcvr (Hammarlund HQ-120); CHC-49154 loudspeaker. NB. Raymond Moore states: "Appears to be early HQ-129," mfd. 1943. Operates from 115 VAC/60 cycles. Sounds like a good acquisition. David Edsall, W1TDD Amherst MA Proud owner of HQ-145A and HQ-170A. Collector of RME and military gear.