• Country
• United States of America (USA)

• Manufacturer / Brand
• Firestone Tire & Rubber Co. (Air Chief & Roamer, Airchief); Akron (OH)

• Year
• 1940 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 40806

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

• Number of Tubes
• 7

• Valves / Tubes
• 6SA7 6SK7 6SJ7 6SQ7 6U5 6F6G 5W4G

• Main principle
• Superheterodyne (common); ZF/IF 455 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 8 inch = 20.3 cm

• Material
• Wooden case

• from Radiomuseum.org
• Model: S7427-8 - Firestone Tire & Rubber Co.

• Shape
• Tablemodel with Push Buttons.

• Dimensions (WHD)
• 13 x 15.5 x 9 inch / 330 x 394 x 229 mm

• Notes
• Built in loop antenna.

• Net weight (2.2 lb = 1 kg)
• 19.8 lb (19 lb 12.8 oz) / 8.989 kg

• External source of data
• Ernst Erb

• Source of data
• Machine Age to Jet Age III

• Circuit diagram reference
• Rider's Perpetual, Volume 11 = ca. 1940 and before

• Mentioned in
• Cathedral & Tombstone Radios (page 112.)

• Literature/Schematics (1)
• Riders 11-4, 11-11

• Other Models

• Here you find 480 models, 313 with images and 439 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Firestone Tire & Rubber Co. (Air Chief & Roamer, Airchief); Akron (OH)