• Year
  • 1940
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 40064

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

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • Superheterodyne (common); ZF/IF 455 kHz
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Line / Batteries (any type) / 105-125, 6, 90 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 inch = 12.7 cm
  • Material
  • Leather / canvas / plastic - over other material
  • from Radiomuseum.org
  • Model: AT-31 Ch= C7-1 - Farnsworth Television & Radio
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 11.3 x 11.2 x 7.3 inch / 287 x 284 x 185 mm
  • Notes
  • Built-in loop antenna.
  • Net weight (2.2 lb = 1 kg)
  • 6.1 kg / 13 lb 7 oz (13.436 lb)
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 11 = ca. 1940 and before
  • Literature/Schematics (1)
  • Complete 1940 Farnsworth Radio Service Notes

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