• Country
• United States of America (USA)

• Manufacturer / Brand
• Electrad Inc.; New York (NY)

• Year
• 1931

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 38025

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

• Number of Tubes
• 6

• Valves / Tubes
• 224 245 250 250 281 281

• Main principle
• Audio-Amplification

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

• Loudspeaker
• - For headphones or amp.

• from Radiomuseum.org
• Model: D-250 [early] - Electrad Inc.; New York NY

• Notes
• employs a '45 driver tube.

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 2 = 1932 (Models 1931/1932)

• Literature/Schematics (1)
• -- Schematic

• Other Models

• Here you find 13 models, 9 with images and 10 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Electrad Inc.; New York (NY)