• Country
• United States of America (USA)

• Manufacturer / Brand
• Freed-Eisemann Radio Corp.; New York, NY

• Year
• 1932

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 40918

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

• Number of Tubes
• 5

• Valves / Tubes
• 39 39 36 89 89

• Main principle
• TRF without regeneration; 1 AF stage(s)

• Tuned circuits
• 3 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Direct Current supply (DC) / 110 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• from Radiomuseum.org
• Model: 51-DC [early] - Freed-Eisemann Radio Corp.;

• Shape
• Tablemodel without push buttons, Mantel/Midget/Compact up to 14

• Notes
• Final audio amplifier with two 89 tubes in parallel. there is also a model 51 late (AM-FM):

• External source of data
• Ernst Erb

• Source of data
• Radio Collector`s Guide 1921-1932

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

• Other Models

• Here you find 205 models, 106 with images and 128 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Freed-Eisemann Radio Corp.; New York, NY