5AT1-K Ch= 5A

Fairbanks, Morse & Co.; Chicago (IL)

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  • Year
  • 1937/1938
perfect model
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 207940
    • alternative name: FMC
    • Brand: Welco

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

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • Superheterodyne (common); ZF/IF 456 kHz; 1 AF stage(s)
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Alternating Current supply (AC) / Either transformer: 50 to 60 cycles, 110V or 40 to 60 cycle, 110V or 25 cycles, 220 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 5 inch = 12.7 cm
  • from Radiomuseum.org
  • Model: 5AT1-K Ch= 5A - Fairbanks, Morse & Co.;
  • Shape
  • Tablemodel, with any shape - general.
  • Notes

  • The Fairbanks Morse 5AT1-K is an AC operated, 5 tube BC band receiver. BC band frequency tuning range is 540 to 1730 kHz. Uses chassis 5A.  Volume is controlled by shorting input signal on antenna. Was available with 3 different power transformers.

    A production change was made that added a 10uF, 25V capacitor in parallel with the cathode resistor on the 41 tube, which was done to improve sensitivity.  This capacitor is NOT shown in the schematics.

    NOTE: 5A is the chassis number and NOT the model number.

    The following models use the same chassis:

     

    Model Number Chassis Cabinet
    5AT1 5A Wooden Walnut Cabinet
    5AT1-K 5A Black (Ebony) Cabinet
    5AT1-V 5A Antique Ivory Cabinet

     

     

  • Source of data
  • - - Manufacturers Literature
  • Circuit diagram reference
  • Rider's Perpetual, Volume 9 = 1938 and before
  • Author
  • Model page created by John Kusching. See "Data change" for further contributors.

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