SCR-300 Backpack Radio Description
SCR-300 Backpack Walkie-Talkie Radio.
Almost fifty thousand SCR-300 Walkie-Talkie units were produced by Motorola during World War II, with the first production sent by air for use in the invasion of Italy in July of 1943.
The Radio Set SCR-300 and SCR-300-A consist of an 18-tube, crystal controlled portable receiver and transmitter, designated BC-1000 (or BC-1000A), along with batteries and accessories such as the case, handset, and two lengths of whip antenna. It has an innovative tuning that sets both receive and transmit frequency in tandem along with integrated calibration. A squelch circuit is provided to minimize roar in the high-gain circuits when there is no signal. The SCR-300 utilizes the frequency band of 40.0 to 48.0 mc divided into 41 channels of 200 kc. The transmitter power is 0.3 watts with a range of 3 miles with the longer antenna.
The BC-1000 was used with the same frequency band in the AN/VRC-3 (used in tanks) so the two sets could intercommunicate between armor and infantry.
The entire SCR-300 assembly weighs between 32 and 38 pounds depending on the batteries used (BA-70 or BA-80). The Radio Set SCR-300 was issued with War Department Technical Manual TM 11-242, 15 June 1943 and later dates (left).
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