• Year
  • 1937/1938
perfect model
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 210505
    • Brand: Synchrophase

 Technical Specifications

  • Number of Tubes
  • 5
  • Valves / Tubes
  • Main principle
  • Superheterodyne (common)
  • Wave bands
  • Broadcast only (MW).
  • Loudspeaker
  • Permanent or electro-dynamic (moving coil), system not known yet.
  • Material
  • Bakelite or Plastics (type unknown)
  • from Radiomuseum.org
  • Model: Challenger 2 - Grebe, A.H. & Co.; Richmond
  • Shape
  • Tablemodel, low profile (big size).
  • Dimensions (WHD)
  • 10.5 x 7 x 5.75 inch / 267 x 178 x 146 mm
  • Literature/Schematics (3)
  • The Grebe Folder for 1937/38 "Prest-O-Matic".

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