BC4S Ch= HS-4135

Motorola Inc. (ex Galvin Mfg.Co. Chicago); Schaumburg (IL)

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  • Year
  • 1964 ?
perfect model
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 222780

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

 Technical Specifications

  • Number of Tubes
  • 7
  • Main principle
  • Superheterodyne (common); ZF/IF 455/10700 kHz; 2 AF stage(s)
  • Tuned circuits
  • 5 AM circuit(s)     7 FM circuit(s)
  • Wave bands
  • Broadcast (BC) and FM or UHF.
  • Power type and voltage
  • Alternating Current supply (AC) / 60 cycle, 110 to 120 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 inch = 12.7 cm
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: BC4S Ch= HS-4135 - Motorola Inc. ex Galvin Mfg.Co
  • Shape
  • Tablemodel with Clock ((Alarm-) Clock Radio).
  • Notes

  • The Motorola BC4S is an AC operated 7 tube AM/FM clock radio. AM Tuning Range: 535 to 1620 kHz. FM Tuning range: 88 to 108MHz.  Has Qty(1) PM 5" speaker. Has built-in ferrite antenna for AM and a 36" wire for the FM antenna. Uses silicon diode for rectifier in power supply.  Cabinet color is brown. Has automatic radio turn-on feature and delayed radio shut-off feature.

    Clock has "Visilite" feature, which consists of two clock faces, one which is seen in daylight, the other seen at night.  Located in the center area of the dial face is a translucent ring which has opaque numerals super-imposed on its back side.  Located behind this center area is a plastic disc which is edge lit by a neon lamp.  The ring and numerals cannot be seen in daylight.  At night, however, the neon-lit plastic disc causes the translucent ring to glow softly and since the clock numerals and hands are silhoutted against it, the time is clearly visible.

    The following models use the same schematic and cabinet but have different cabinet colors:

    Model Number Cabinet Back Color Cabinet Front Color
    BC4E Black Black
    BC4S Brown Brown
    BC4W White White

     

  • Circuit diagram reference
  • Beitman Radio Diagrams Vol. 25, 1965
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Motorola Datasheet 68P60084A25 Dated 4-64)
  • Author
  • Model page created by Jose Casas-Avalos. See "Data change" for further contributors.

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