Radio Receiver BC-1004
Hammarlund SP-200
year 1942

Radio Receiver BC-1004 (*) is a superheterodyne receiver intended for reception of amplitude modulated (a-m) signals and for fixed station use in the frequency range of 540 kilocycles to 20 megacycles. This receiver can receive voice and continuous wave (cw) signals with either the MANUAL or AVC ( automatic volume control ). The receiver may be used with either of three external power supply unit as fallow: Power Supply Unit RA-84-B, designed for operate from 105-115-125 Volt, 50-60 cycles power source ; Power Supply Unit RA-74-C, designed to operate from 95-130 volts, 190-260 volt, 25-60 cycles power source or Power Supply Unit RA-94-A, designed to operate from a 115- or – 230 volt, 50-60 cycles power source. In an emergency any one of the receivers can be operated from a 6volt storage battery, five 45 volt “B” batteries and a 45 volt “C” batteries.

Frequency coverage: 540 kc - 20 mc. in five bands
Type of signals: am - cw
IF: 465 Kc
Filter: crystal
Tubes Rx: 3 x 6K7, 1 X 6L7, 3 x 6SK7,
1 x 6J7, 2 x 6H6, 1 x 6SJ7, 1 x 6N7,
1 x 6C5, 3 x 6F6
Power supply:
AC operation
      RA- 84-B 105-115-125 Volt
      RA-74-C 95-130, 190-260 Volt
      RA-94-A 115-230 Volt
DC operation:
Filament 6.3V 6.25 A
      “B” Voltage 225V .117 Amperes
      “C” Voltage 90V .0045 Amperes Dimensions: 10 ½ x 19 x 15 3/8 x inc.
Weight: 55 pounds
Manual: TM 11-866