• Year
  • 1936/1937
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 40689

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 456 kHz
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast and Short Wave (SW).
  • Power type and voltage
  • Alternating Current supply (AC) / 110 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 5 inch = 12.7 cm
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: 7405-2 Air Chief - Firestone Tire & Rubber Co.
  • Shape
  • Tablemodel, low profile (big size).
  • Notes
  • Firestone began selling non-automobile radios in the Fall 1936. These radios were normally manufactured by Stewart Warner. The model 7405-1 (4 tubes) is the smallest of the family for 1936/37, followed by 7405-2 (5 tubes) and 7405-3 (7 tubes) in size. The model 7405-2 has an illuminated airplane dial, 3 knobs below. Hand rubbed walnut cabinet. SW included Amateur and Police bands. Price was 23.95 $. The chassis is the same as for model 7405-4.
  • Price in first year of sale
  • 24.00 $
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 17 = 1948 and before

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