• Year
  • 1939 ?
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 40804

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

 Technical Specifications

  • Number of Tubes
  • 3
  • Main principle
  • TRF without regeneration
  • Tuned circuits
  • 2 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Dry Batteries / 90 & 1.5 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 4 inch = 10.2 cm
  • from Radiomuseum.org
  • Model: S7427-6 - Firestone Tire & Rubber Co.
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Notes
  • Built in loop antenna. Error at schematic ,Riders notes if 455Kc ?
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 10 = 1939 and before
  • Literature/Schematics (1)
  • Riders 10-5

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