• Country
• United States of America (USA)

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

• Year
• 1965 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 238804

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, 120 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: AC4BU Ch= HS-67201 - Motorola Inc. ex Galvin Mfg.Co

• Shape
• Tablemodel with Clock ((Alarm-) Clock Radio).

• Notes

• The Motorola AC4BU is an AC operated 5 tube BC band clock radio. Has built-in loop antenna. BC band tuning range is 535 to 1620kHz. Cabinet color is Beige. Has automatic radio turn-on feature and delayed radio shut-off feature.

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

  Model Number	Cabinet Color
  AC4BH	White
  AC4BN	Brown
  AC4BU	Beige

   

• Circuit diagram reference
• Beitman Radio Diagrams Vol. 26, 1966

• Literature/Schematics (1)
• - - Manufacturers Literature (Motorola Datasheet 68P63010A46 Dated 3-66)

• Literature/Schematics (2)
• Beitman Radio Diagrams, Vol. 26, 1966 (Page 69)

• Author
• Model page created by John Kusching. 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)