Challenger 3C Prest-O-Matic (Prestomatic)

Grebe, A.H. & Co.; Richmond Hill (NY)

  • Year
  • 1937/1938
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 210503
    • Brand: Synchrophase

 Technical Specifications

  • Number of Tubes
  • 6
  • Valves / Tubes
  • Main principle
  • Superheterodyne (common)
  • Power type and voltage
  • AC/DC-set
  • Loudspeaker
  • Permanent or electro-dynamic (moving coil), system not known yet.
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Challenger 3C Prest-O-Matic - Grebe, A.H. & Co.; Richmond
  • Shape
  • Tablemodel with Push Buttons.
  • Dimensions (WHD)
  • 13.5 x 8.75 x 6.5 inch / 343 x 222 x 165 mm
  • Literature/Schematics (3)
  • The Grebe Folder for 1937/38 "Prest-O-Matic".

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