• Country
• United States of America (USA)

• Manufacturer / Brand
• Automatic Radio Mfg. Co.; Boston (MA)

• Year
• 1937

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 33781

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

• Number of Tubes
• 5

• Valves / Tubes
• 6A7 6D6 6Q7 25L6 25Z5

• 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 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• from Radiomuseum.org
• Model: B30 [series II] - Automatic Radio Mfg. Co.;

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 8 = 1937 and before

• Other Models

• Here you find 401 models, 163 with images and 321 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Automatic Radio Mfg. Co.; Boston (MA)