SK56MB-1 Ch= HS-968, HS-969

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

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  • Year
  • 1961
perfect model
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 88061

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

 Technical Specifications

  • Number of Tubes
  • 21
  • Main principle
  • Superhet with RF-stage; ZF/IF 455/10700 kHz; 4 AF stage(s)
  • Tuned circuits
  • 7 AM circuit(s)     9 FM circuit(s)
  • Wave bands
  • Broadcast (BC) and FM or UHF.
  • Details
  • Changer (Record changer)
  • Power type and voltage
  • Alternating Current supply (AC) / 60 cycles, 120 Volt
  • Loudspeaker
  • 5 Loudspeakers
  • Power out
  • 51 W (110 W max.)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: SK56MB-1 Ch= HS-968, HS-969 - Motorola Inc. ex Galvin Mfg.Co
  • Shape
  • Console with any shape - in general
  • Notes

  • The Motorola SK56MB-1 is an AC operated 21 Tube Stereo BC/FM band receiver, Phono Amplifier and 4 Speed Automatic Record Changer. Has Vibrasonic system and tuning eye indicator. Chassis HS-969 has 11 tubes used for the BC/FM receiver, the vibrasonic preamp and the main preamp.  Chassis HS-968 has 10 tubes used for the 3 channel power amplifier and power supply. Cabinet is Mahogany. This model has Qty(1) 15" PM speaker for bass channel, Qty(2) 8.25" speakers and Qty(2) 5.25" PM speakers. Has separate bass channel that drives the 15" speaker. Uses Record Changer VM59RC.

    A "FM Stereo" option was available for this model, which used Stereo FM chassis HS-996.

     

  • Circuit diagram reference
  • Beitman Radio Diagrams Vol. 22, 1962
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Motorola Datasheet 68P60011A72 Dated 6-61)
  • Author
  • Model page created by Egon Penker. See "Data change" for further contributors.

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