Wireless Set No.33

MILITARY U.K. (different makers for same model)

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  • Year
  • 1941
  • Category
  • Military transmitter
  • Radiomuseum.org ID
  • 203787

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

 Technical Specifications

  • Number of Tubes
  • 10
  • Main principle
  • Transmitter
  • Wave bands
  • Short Wave (SW only)
  • Power type and voltage
  • Alternating Current supply (AC) / 100-250 Volt
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Wireless Set No.33 - MILITARY U.K. different makers
  • Shape
  • Boatanchor (heavy military or commercial set >20 kg).
  • Dimensions (WHD)
  • 23 x 25 x 16 inch / 584 x 635 x 406 mm
  • Notes
  • Wireless Set No.33: ground / vehicle station transmitter, frequency coverage 1.2 - 17.5 MHz in four ranges (1,2-2,55 / 2,5-5,3 / 5,2-10,5 / 10-17,5 MHz). Power output 250 Watts on CW, 65 Watts on MCW and telephony.
    Normally associated with receiver R107 or R106 (HRO receiver), can be remotely controlled, then another R107 is necessary.
    The Wireless Set No.33 designed in 1940 is in fact a Wireless Set No.12 driving a 250 W RF amplifier mounted on top of it in one common cabinet. It comes with a mains power supply which is as heavy as the transmitter part and could be used on vehicles or as ground station.
    Due to problems with cooling the selenium rectifiers of the ower supply at high temperatures outside, there was one modification with with a perforated metal that kept the lid open with an angle of 30° for cooling and another variant with a cooling fan.
  • Net weight (2.2 lb = 1 kg)
  • 175 lb (175 lb 0 oz) / 79.450 kg
  • Mentioned in
  • Wireless for the Warrior Vol. 1, L. Meulstee
  • Author
  • Model page created by Martin Bösch. See "Data change" for further contributors.

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