52L3 Ch= HS-327

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

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  • Year
  • 1951/1952
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 48881

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

 Technical Specifications

  • Number of Tubes
  • 4
  • Number of Transistors
  • 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
  • Line / Batteries (any type) / AC/DC 117 V / 2 x 1.5 (3V in series) & 67.5 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 3.5 inch = 8.9 cm
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: 52L3 Ch= HS-327 - Motorola Inc. ex Galvin Mfg.Co
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Notes

  • There are six models in this series. The later "A" models added a "B" Battery Saver slide switch, located in the upper right corner of the speaker grill.  The two slide switch positions are: left (DISTANCE-HI), and right (LOCAL-LO).  The DISTANCE-HI position increased the "B" battery drain and improved reception for long distance broadcasts.  The original model "B" battery drain was fixed at the later "A" model DISTANCE-HI drain level.

    Model Chassis Color Battery Saver Switch
    52L1 HS-327 Green NO
    52L2 HS-327 Maroon NO
    52L3 HS-327 Gray NO
    52L1A HS-357 Green YES
    52L2A HS-357 Maroon YES
    52L3A HS-357 Gray YES

     

  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 23 (last), covering up to 1954
  • Literature/Schematics (3)
  • Motorola Folder No. 3301 for 1952.

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