• Year
  • 1955 ?
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 81632

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 455 kHz; 2 AF stage(s)
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Alternating Current supply (AC) / 60 cycles, 117 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 4 inch = 10.2 cm
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: 56CS4 Ch= HS-490 - Motorola Inc. ex Galvin Mfg.Co
  • Shape
  • Tablemodel with Clock ((Alarm-) Clock Radio).
  • Notes
  • The Motorola 56CS4 is an AC operated 5 tube AM Clock Radio.  The AM band tuning range is 535 to 1620kHz.  Uses chassis HS-490. Has built-in loop antenna.

    The following models use the same schematic and chassis but have slight differences as noted in the table below:

    Model Cabinet Color 1100W clock controlled appliance outlet Differences
    56CE1 Ebony No  
    56CS1 Mahogany Yes  
    56CS2 White Yes  
    56CS3 Red Yes  
    56CS4 Green Yes  
    56CE1-A Ebony No See Note
    56CS1-A Mahogany Yes See Note
    56CS2-A White Yes See Note
    56CS3-A Red Yes See Note
    56CS4-A Green Yes See Note

    Note: The -A versions are late production versions that use a Telechron clock, a different back cover to fit different clock rear adjustments and C5 changed from 200V rating to 400V rating.  The 56CE1-A also has a different operation selector knob.

  • Literature/Schematics (1)
  • - - Manufacturers Literature (Motorola Datasheet 68P634936)
  • Author
  • Model page created by Egon Penker. See "Data change" for further contributors.

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The model 56CS4 is part of the collections of the following members.

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