• 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
• 40741

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

• Number of Tubes
• 5

• Valves / Tubes
• 12SA7 12SK7 12SQ7 35L6GT 35Z5GT

• Main principle
• Superheterodyne (common); ZF/IF 456 kHz

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• AC/DC-set / 110-120 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 4 inch = 10.2 cm

• from Radiomuseum.org
• Model: S7401-1 Lumitone - Firestone Tire & Rubber Co.

• Notes
• Table Lamp-radio. Built in loop antenna.

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 13 = 1942 and before

• Literature/Schematics (1)
• Riders 13-35, 36

• 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)