• Country
• United States of America (USA)

• Manufacturer / Brand
• CBS-Columbia Inc.; New York, NY

• Year
• 1940

• Category
• Sound/Video Recorder and/or Player

• Radiomuseum.org ID
• 35687

• • alternative name: CBS Electronics || Columbia Phonographs || Columbia Records

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

• Number of Tubes
• 1

• Valves / Tubes
• 70L7GT

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Record Player (perh.Changer)

• Power type and voltage
• Alternating Current supply (AC) / 110-120 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 6 inch = 15.2 cm

• from Radiomuseum.org
• Model: Counter Demonstrator D-1 - CBS-Columbia Inc.; New York,

• External source of data
• Ernst Erb

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

• Other Models

• Here you find 423 models, 246 with images and 381 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from CBS-Columbia Inc.; New York, NY