• Country
• United States of America (USA)

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

• Year
• 1958 ?

• Category
• Car Radio, perhaps also + sound player/recorder

• Radiomuseum.org ID
• 84177

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

• Number of Tubes
• 4

• Valves / Tubes
• 12BL6 12AD6 12BL6 12DL8

• Number of Transistors
• 1

• Semiconductors
• 2N176

• Main principle
• Superhet with RF-stage; ZF/IF 262.5 kHz; 2 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage Battery for all (e.g. for car radios and amateur radios) / 12 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical

• Material
• Metal case

• from Radiomuseum.org
• Model: 74MF Ch= B7A-18805-A1 [Ford 1957] - Motorola Inc. ex Galvin Mfg.Co

• Shape
• Chassis only or for «building in»

• Notes
• BC: 540-1610

• Circuit diagram reference
• Beitman Radio Diagrams Vol. 18, 1958

• Mentioned in
• - - Manufacturers Literature (Motorola Service Manual 68P560327)

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Date 9-58, Set 411, Folder 8)

• Author
• Model page created by Egon Penker. See "Data change" for further contributors.

• Other Models

• Here you find 4607 models, 2964 with images and 4106 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)