I hooked up an old DVD/CD player to an old Yamaha R-V703 Surround Sound Amp, to drive modulation to an HP 606A Signal Generator at 11 MHz, to a spare telescoping antenna I had, receiving at 11 MHz on the Hallicrafters. The audio you hear is from a October 7, 1943 live radio broadcast, Bing Crosby Armed Forces Broadcasts. This entire Bing Crosby Armed Forces Broadcast CD set is from LaserLight Digital (#15 934) consisting of 5 CD's of select broadcast dates from 1943-1945. You can hear exactly what radio sounded like during WW2 coming through the SX-28 receiver's RF chain down to the audio output on the PM-23 speaker (designed to match the SX-28 specifically). The HP 606A is set at External Modulation- AC and the attenuator selector is set at -30 dBm and adjusted as needed but set at ~2 volts on the meter since range from transmitter to 30 meter longwire receiving antenna (which is outside) is about 20-25 feet (~8 meters).
Keywords: shortwave, Bing, Crosby, WW2, WWII, Hallicrafters, HP, Hewlett-Packard, 606A, radio, ham, AM, transmitter, USO, broadcast, receiver, Marconi, valve, DX
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