• Country
• United States of America (USA)

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

• Year
• 1955 ?

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

• Radiomuseum.org ID
• 101543

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

• Number of Tubes
• 6

• Valves / Tubes
• 12BA6 12BE6 12BA6 12AV6 12AQ5 12X4

• 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) / 12 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• Material
• Metal case

• from Radiomuseum.org
• Model: 4-B-77 Code 120-5-C325 - Firestone Tire & Rubber Co.

• Shape
• Chassis only or for «building in»

• Notes

• Firestone model 4-8-77 is a battery operated custom-built AM superheterodyne automobile receiver. For 1955 Chevrolet Automobiles. Vibrator for +B.
   

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Date 11-55, Set 298, Folder 4)

• Author
• Model page created by Peter Hoddow. See "Data change" for further contributors.

• Other Models

• Here you find 473 models, 310 with images and 430 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)