• Country
• United States of America (USA)

• Manufacturer / Brand
• Philco, Philadelphia Stg. Batt. Co.; USA

• Year
• 1939

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

• Radiomuseum.org ID
• 51235

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

• Number of Tubes
• 5

• Valves / Tubes
• 6A7 78 75 41 84

• Main principle
• Superheterodyne (common); ZF/IF 260 kHz

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage and/or dry batteries / =6 Volt

• Loudspeaker
• -Loudspeaker incorporated, but system not known.

• from Radiomuseum.org
• Model: 920 - Philco, Philadelphia Stg. Batt

• Notes
• with vibrator.

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 9 = 1938 and before

• Mentioned in
• Beitman Radio Diagrams, Vol. 02, 1939

• Other Models

• Here you find 4063 models, 2220 with images and 3710 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Philco, Philadelphia Stg. Batt. Co.; USA