• Country
• United States of America (USA)

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

• Year
• 1943 ??

• Category
• Military transmitter

• Radiomuseum.org ID
• 338167

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

• Number of Tubes
• 23

• Valves / Tubes
• 24-G 24-G 24-G 24-G 24-G 811 811 807 6J5 6J5 6J5 6J5 6F6 6F6 6F6 5Z3 5Z3 5Z3 5Z3 5Z3 5Z3 5Z3 5Z3

• Main principle
• Transmitter

• Wave bands
• VHF incl. FM and/or UHF (see notes for details)

• Power type and voltage
• Alternating Current supply (AC) / 110; 230 Volt

• Loudspeaker
• - - No sound reproduction output.

• Power out
• 50 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: Transmitter BC-640 - MILITARY U.S. different makers

• Shape
• Rack

• Dimensions (WHD)
• 21.25 x 72.375 x 18 inch / 540 x 1838 x 457 mm

• Notes

• Fixed transmitter for connection with aircraft. Operating frequencies from 100 to 156 MHz
  RF output power: 50 Watts in Amplitude Modulation (Voice or modulated code).

• Net weight (2.2 lb = 1 kg)
• 601.5 lb (601 lb 8 oz) / 273.081 kg

• Mentioned in
• Radiosurplus Ieri e Oggi, Italy by Umberto Bianchi, CD editor, 1982

• Author
• Model page created by Pier Antonio Aluffi. 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)