57 Radiogram Ch= KO-C (AC; KOC)

Fada Radio & Electric Co.; Long Island (NY)

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  • Year
  • 1931
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 124070
    • alternative name: Andrea-Radio || Nater, Henri, Atlanta-Radio; Zürich

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

 Technical Specifications

  • Number of Tubes
  • 7
  • Main principle
  • Superhet with RF-stage; ZF/IF 175 kHz; 1 AF stage(s)
  • Tuned circuits
  • 7 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Details
  • Record Player (not changer)
  • Power type and voltage
  • Alternating Current supply (AC) / 110 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: 57 Radiogram Ch= KO-C - Fada Radio & Electric Co.;
  • Shape
  • Console, Lowboy (legs < 50 %).
  • Notes
  • The FADA model KO-C is often written as KOC - so we have to have both in the model name field. There are several versions - depending on the cabinet number. Rider's shows the following for the same schematic: model 51 (KO), model 53 and 57 (KO-C). They have 4 tuned RF circuits but only another 3 tuned IF circuits. One is untuned. Stein dates 1932, but it is already in the first Rider's, page 88C (and in volume 1 as FADA 1-30), but not in Gernsback from 1930.
    There is also a completely different cabinet made in Italy for Fada model 51 Italy - and late Catalin USA FADA model 53 (1939).

    See also the DC versions: The same DC chassis KO-C serves for model 171 and model 173 (see Rider's schematic).
  • Circuit diagram reference
  • Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)

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