• Country
• United States of America (USA)

• Manufacturer / Brand
• MILITARY U.S. (different makers for same model)

• Year
• 1941 ??

• Category
• Military Transceiver (TRX)

• Radiomuseum.org ID
• 280937

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 13

• Valves / Tubes
• 1A7 1N5 1N5 1N5 3Q5 3Q5 1H5 307A 307A 3Q5 3Q5 3Q5 3Q5

• Main principle
• Transceiver; ZF/IF 455 kHz

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• Powered by external power supply or a main unit. / 6 or 12 Volt

• Loudspeaker
• - only for Earphone!

• Material
• Metal case

• from Radiomuseum.org
• Model: Radio Receiver and Transmitter BC-654-A - MILITARY U.S. different makers

• Shape
• Boatanchor (heavy military or commercial set >20 kg).

• Dimensions (WHD)
• 457 x 355 x 247 mm / 18 x 14 x 9.7 inch

• Notes

• SCR-284 consists of BC-654-A and associated support equipment including the power unit. The dimensions and weight are for the BC-654-A only.

  Radio Receiver and Transmitter.
  Superheterodyne receiver with BFO and CAV
  This apparatus can be powered in different ways:

  • A crank generator Crosley GN45;
  • A 220V AC power supply;
  • The PE-104A booster power supply
  • The PE-103A dynamotor power supply.

  TX tubes are powered with -6 V. RX tubes with -1.5 V. Anodic voltage RX/TX is 500 V.
  Frequency range: 3.8 to 5.8 MHz, AM or CW
  Power output: Low: AM 2W; CW 6.5W. High: AM: 5W; CW 17W. 

  Tubes 1-7  RX; 8-13 TX.

• Net weight (2.2 lb = 1 kg)
• 44.75 lb (44 lb 12 oz) / 20.317 kg

• Mentioned in
• The Surplus Handbook - Receivers and Transmitters (page 37-38)

• Literature/Schematics (1)
• -- Original-techn. papers. (Radiosurplud Ieri e Oggi, Umberto Bianchi - Italy)

• Author
• Model page created by Alessandro De Poi. See "Data change" for further contributors.

• Other Models

• Here you find 399 models, 351 with images and 210 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from MILITARY U.S. (different makers for same model)