• Country
• United States of America (USA)

• Manufacturer / Brand
• Motorola Inc. (ex Galvin Mfg.Co. Chicago); Schaumburg (IL)

• 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.

• Number of Tubes
• 5

• Valves / Tubes
• 12BE6 12BA6 12AV6 50C5 35W4

• 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)

• Literature/Schematics (2)
• Beitman Radio Diagrams, Vol. 16, 1956 (Page 60)

• Literature/Schematics (3)
• Photofact Folder, Howard W. SAMS (Set 317, folder 10 dated 5-56)

• Author
• Model page created by Egon Penker. See "Data change" for further contributors.

• Other Models

• Here you find 4596 models, 2962 with images and 4095 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Motorola Inc. (ex Galvin Mfg.Co. Chicago); Schaumburg (IL)