12 Code 121

• Country
• United States of America (USA)

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

• Year
• 1932/1933

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

• Radiomuseum.org ID
• 50457

• Picture
• Schematics

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

• Number of Tubes
• 6

• Valves / Tubes
• 36 36 36 38 41 41

• Main principle
• Superhet with RF-stage; ZF/IF 175 kHz

• Wave bands
• Broadcast only (MW).

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

• from Radiomuseum.org
• Model: 12 Code 121 - Philco, Philadelphia Stg. Batt

• Notes
• This car radio uses a model EA dynamotor for +B. The later model 12-Code 122 has an IF of 260 kHz and tube lineup: 36 36 36 85 37 79.

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 3 = 1933 and before

• Mentioned in
• Complete instructions for adjusting all Philco radio receivers

• Other Models

• Here you find 4041 models, 2218 with images and 3690 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Philco, Philadelphia Stg. Batt. Co.; USA