• Country
• United States of America (USA)

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

• Year
• 1950 ?

• Category
• Car Radio, perhaps also + sound player/recorder

• Radiomuseum.org ID
• 40660

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

• Number of Tubes
• 6

• Valves / Tubes
• 6BA6 6BE6 6BA6 6AT6 6AQ5 6X4

• Main principle
• Superhet with RF-stage; ZF/IF 455 kHz; 2 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage Battery for all (e.g. for car radios and amateur radios) / 6 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5.25 cm = 2.1 inch

• Material
• Metal case

• from Radiomuseum.org
• Model: 4-B-56 1949-50 Ford - Firestone Tire & Rubber Co.

• Shape
• Chassis only or for «building in»

• Notes

• Vibrator V-83 for +B

• External source of data
• Ernst Erb

• Circuit diagram reference
• Beitman Radio Diagrams Vol. 11, 1951

• Mentioned in
• Photofact Folder, Howard W. SAMS (Date 5-1951, Set 133, Folder 6)

• Literature/Schematics (1)
• Rider's Perpetual, Volume 22 = covering 1951

• 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)