• Country
• United States of America (USA)

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

• Year
• 1956 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 119189

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

• Number of Tubes
• 4

• Valves / Tubes
• 1R5 1U4 1U5 3V4

• 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) / 117 AC DC; 7.5 & 90 Volt Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 3.5 inch = 8.9 cm

• Material
• Metal case

• from Radiomuseum.org
• Model: 56B1 Ch= HS-533 - Motorola Inc. ex Galvin Mfg.Co

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 10.5 x 9 x 3 inch / 267 x 229 x 76 mm

• Notes

• Color = Brown; Selenium Rectifier.

  The power cord appears to be similar to the safety interlock cords used on many radios and televisions but the pin spacing is about 1mm wider than the more common interlock cord.

• Source of data
• - - Data from my own collection

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Date 9-59, Set 455, Servicer)

• Author
• Model page created by Keith Staines. See "Data change" for further contributors.

• Other Models

• Here you find 4601 models, 2962 with images and 4100 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)