Seventy years ago this month, the September 1952 issue of Radio-Electronics carried the plans for this miniature regenerative receiver covering three bands with the convenience of band switching. The coil was wound by the builder, and different windings were switched in to cover the broadcast band, 1.5-4 MHz, and 6-16 MHz. The set was 7.5 inches deep, 6 inches long, and 1.5 inches high, and housed a 7H7 regenerative detector, with the audio being amplified by a 6SQ7 and 6F6. It was billed as being suitable for “signal monitoring, dial-twirling, or emergency standby service.” In addition to 6.3 volts for the filaments, the set required a power supply of 180-250 VDC.