• Country
• United States of America (USA)

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

• Year
• 1953/1952 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 85660

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

• Number of Tubes
• 4

• Valves / Tubes
• 1R5 1U4 1U5 3S4

• 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
• Storage and/or dry batteries / 67.5 & 1.5 Volt

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

• Material
• Various materials

• from Radiomuseum.org
• Model: 42B1 Ch= HS-306 - Motorola Inc. ex Galvin Mfg.Co

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

• Dimensions (WHD)
• 8.25 x 6.28125 x 2.3125 inch / 210 x 160 x 59 mm

• Notes

• Motorola model 42B1 is a battery operated AM superheterodyne receiver. Black and Chrome finish.

• Circuit diagram reference
• Beitman Radio Diagrams Vol. 12, 1952

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Date 1-53, Set 191, Folder 14)

• Literature/Schematics (3)
• Motorola Folder No. 3201 and 3301 for 1952.

• Author
• Model page created by Walter Wiesmüller † May 2012. See "Data change" for further contributors.

• Other Models

• Here you find 4646 models, 2969 with images and 4145 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)