TM 11-4006: Radio Receiver and Transmitter BC-474-A, Repair Instructions

TM 11-4006 Radio Receiver and Transmitter BC-474-A, Repair Instructions

TM 11-4006

Radio Receiver and Transmitter BC-474-A, Repair Instructions

Army · TM · Mar 1944 · 52 pages

About

RESTRICTED SECTION DESCRIPTION OF RADIO RECEIVER AND TRANSMITTER BC—474—A* General Radio Receiver and Transmitter BC-474—A (figs. 1 and 2), a component of Radio Set SCR-288, is a portable amplitude-modulated transmitter and receiver. It transmits and receives both voice- modulated (phone) and c-w (continuous-wave) signals. 2. Transmitter a. USE. Radio Transmitter BC—474—A is used for ground operation. b. FREQUENCY RANGE. The 3-tube transmitter is designed to operate within the frequency range of 3,500 to 6,300 ke (kilocycles). c. OPERATING RANGE. The operating range is 15 miles for c-w operation and 8 miles for voice-modulated operation. d. POWER INPUT. Power is furnished by hand-operated Generator GN—44—A which sup- plies 290 volts de (direct current) to the plate circuits and 6.6 volts dc to the heater circuits. e. POWER OUTPUT.

DesignationTM 11-4006

EditionMar 1944

StatusSuperseded

Pages52

FunctionComms Signal

CollectionHistoric

Public domain (U.S. Government work)

References 2

TM 11-250Not in the Vault