• Year
  • 1925/1926
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 37094
    • alternative name: Lee De Forest Mfg.

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • TRF (Tuned-Radio-Frequency but use of regeneration unknown); 2 AF stage(s)
  • Tuned circuits
  • 3 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Storage and/or dry batteries
  • Loudspeaker
  • Horn
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: F-5-M - DeForest Radio Telephone &
  • Shape
  • Tablemodel, Box - most often with Lid (NOT slant panel).
  • Dimensions (WHD)
  • 22.75 x 16.75 x 16.25 inch / 578 x 425 x 413 mm
  • Notes
  • The DeForest F-5-M is a battery operated BC band receiver.  Has three dial primary tuning controls. Uses 6V "A" battery, 90V "B" battery with taps in 22.5V increments and a 4.5V "C" battery.  The detector stage operates from the first 22.5V tap on the "B" battery.

    Equipped with built-in Horn Loudspeaker and battery compartment. Same chassis is used in all of the F-5 models.

    M is for Mahogany wooden case.

    DeForest Tubes
    Five required for any F-5

    Type DV-2 Storage Battery Type Audion  $3.00
    Type DV-5 Storage Battery Type Audion  $3.00

    Note: When storage "A" Battery is used for filament current supply in the F-5, 5 DV-2's or 5 DV-5 tubes are required, or preferrably, 2 DV-5 and 3 DV-2 tubes.

    Type DV-3 Dry Battery Type Audion  $3.00

    Note: When Dry batteries are used for filament current supply in the "F-5," 5 DV-3 Tubes are required. 

  • Price in first year of sale
  • 110.00 $
  • External source of data
  • Ernst Erb
  • Literature/Schematics (2)
  • Radio Broadcast, Dec. 1925, p. 225

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