• Country
• United States of America (USA)

• Manufacturer / Brand
• Coast to Coast Radio Co. NY,NY

• Year
• 1933 ?

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 35430

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

• Number of Tubes
• 5

• Valves / Tubes
• 37 43 43 25Z5 25Z5

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Line / Storage batteries (perhaps also batteries)

• from Radiomuseum.org
• Model: D3031 Universal Amplifier - Coast to Coast Radio Co. NY,NY

• Notes
• Operates from 6V storage using a motor generator for +B, or from 115 V AC/DC mains.

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 4 = ca. 1934 and before

• Other Models

• Here you find 12 models, 0 with images and 7 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Coast to Coast Radio Co. NY,NY