• Country
• United States of America (USA)

• Manufacturer / Brand
• Detrola; Detroit (MI)

• Year
• 1942 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 37349

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

• Number of Tubes
• 5

• Valves / Tubes
• 12SA7 12SK7 12SQ7 50L6GT 35Z5GT

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz; 2 AF stage(s)

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• AC/DC-set / 117 Volt

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

• Material
• Bakelite case

• from Radiomuseum.org
• Model: 441 - Detrola; Detroit MI

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

• Notes

• Permeability tuned RF- and Oscillator circuits.
  Built-in loop antenna: On the back is the following statement, "Built-in Detroscope Antenna usually ample for broadcast. For distant reception or poor locations, stretch out attached antenna wire." There are more such models, but we normally don't mention the antenna in the model name. Here we do that a model can be found with this term.

• External source of data
• Ernst Erb

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

• Other Models

• Here you find 331 models, 193 with images and 287 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Detrola; Detroit (MI)