• Year
  • 1919
  • Category
  • Radio module pre 1926 (not a part, not a key)
  • Radiomuseum.org ID
  • 204148
    • alternative name: Lee De Forest Mfg.

 Technical Specifications

  • Number of Tubes
  • 1
  • Main principle
  • Detector with Vacuum Tube (Valve), no tuner
  • Wave bands
  • - without
  • Power type and voltage
  • Storage and/or dry batteries
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Wooden case, TUBES VISIBLE.
  • from Radiomuseum.org
  • Model: Audion - Ultra Audion Panel P-500 - DeForest Radio Telephone &
  • Shape
  • Tablemodel, Box - most often with Lid (NOT slant panel).
  • Notes
  • DeForest Radio and Telegraph Co. P-500 Audion Ultra Audion Control Panel.
  • Price in first year of sale
  • 25.00 $
  • Literature/Schematics (1)
  • Nov/Dec Everyday Engineering Magazine page 141
  • Author
  • Model page created by Alan Larsen. See "Data change" for further contributors.

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