B29 CDF CDM CR200 Admiralty Patt. W2698

Marconi Co. (Marconiphone, Marconi's Wireless Telegraph Co. Ltd.), GB (not tubes - see also HMV His Master's Voice)

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  • Year
  • 1941 ?
  • Category
  • Commercial Receiver (may include amateur bands)
  • Radiomuseum.org ID
  • 120407

 Technical Specifications

  • Number of Tubes
  • 6
  • Main principle
  • TRF (Tuned-Radio-Frequency but use of regeneration unknown)
  • Wave bands
  • Wave Bands given in the notes.
  • Power type and voltage
  • Alternating Current supply (AC) / 100-110 / 200-250 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: B29 CDF CDM CR200 [Admiralty Patt. W2698] - Marconi Co. Marconiphone,
  • Shape
  • Boatanchor (heavy military or commercial set >20 kg).
  • Dimensions (WHD)
  • 19 x 13.5 x 16 inch / 483 x 343 x 406 mm
  • Notes

  • VLF receiver covering 15 to 550 kHz in 4 ranges (15-38 / 38-90 / 90-240 / 240-550 kHz), AM/MCW, CW.

    Used for maritime communications and beacons, CRASH filter (EMP protection) for front-end protection, R.I.S. filter for Radar Interference Suppression of signals from onboard radar equipment.

    Used by the Royal Navy (B29, designations CDF (ship) and CDM (shore installation).

    See also CR-200 (Marconi Española)

  • Net weight (2.2 lb = 1 kg)
  • 37 kg / 81 lb 8 oz (81.498 lb)
  • Source of data
  • -- Original-techn. papers.
  • Author
  • Model page created by Martin Bösch. See "Data change" for further contributors.

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Museums

The model B29 CDF CDM can be seen in the following museums.

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