Detector and One Stage Amplifier Type P-300

DeForest Radio Telephone & Telegraph Co. (De Forest); New York

  • Year
  • 1920
  • Category
  • Radio module pre 1926 (not a part, not a key)
  • Radiomuseum.org ID
  • 195801
    • alternative name: Lee De Forest Mfg.

 Technical Specifications

  • Number of Tubes
  • 2
  • Main principle
  • Detector with Vacuum Tube (Valve), no tuner; 1 AF stage(s)
  • Wave bands
  • - without
  • Power type and voltage
  • Storage and/or dry batteries
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Detector and One Stage Amplifier Type P-300 - DeForest Radio Telephone &
  • Shape
  • Tablemodel, Box - most often with Lid (NOT slant panel).
  • Dimensions (WHD)
  • 12.5 x 9.4 x 7.4 inch / 318 x 239 x 188 mm
  • Notes
  • The DeForest Type P-300 Combination Audion-Ultra Audion and One-step Amplifier.
  • Price in first year of sale
  • 74.00 $
  • Literature/Schematics (1)
  • July 1920 Radio News advertisement inside front cover
  • Author
  • Model page created by Alan Larsen. See "Data change" for further contributors.

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