• Country
• Great Britain (UK)

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

• Year
• 1948

• Category
• Military Transceiver (TRX)

• Radiomuseum.org ID
• 203782

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

• Number of Tubes
• 18

• Valves / Tubes
• CV807 CV807 CV785 CV1758 CV785 CV785 CV1758 CV785 CV785 CV782 CV785 CV1758 CV1758 CV753 CV784 CV784 CV1758 CV784

• Main principle
• Superhet, double/triple conversion; ZF/IF 4300 / 2515 kHz

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

• Power type and voltage
• Dry Batteries / 150 & 90 & 4,5 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: Wireless Set No.31 - MILITARY U.K. different makers

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 12 x 17 x 6 inch / 305 x 432 x 152 mm

• Notes
• Wireless set No. 31: Short range man-pack transceiver covering 40 - 48 MHz VHF, FM (F3), p_out 0,30 Watt;
  powered by LT 4,5 V and HT 150 V and 90 V dry batteries; used by British Army for short range communications between infanry units carried as man-pack on march or in a slightly modified variant as AFV (armed fighting vehicle) set;
  The development of Wireless Set No.31 started during WW II, but first tests have not been accomplished until 1947 and it was introduced with the troops in 1948. The Wireless Set No.31 is technically and in appearence very similar to the U.S.Signal Corps BC-1000 (SCR-300) but it came with British headgear and microphone.

• Net weight (2.2 lb = 1 kg)
• 22.5 lb (22 lb 8 oz) / 10.215 kg

• Mentioned in
• Wireless for the Warrior Vol. 1, L. Meulstee

• Author
• Model page created by Martin Bösch. See "Data change" for further contributors.

• Other Models

• Here you find 146 models, 114 with images and 48 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from MILITARY U.K. (different makers for same model)