AM-2 Ch= CR729AA, CR729BA and CR729CA

• Country
• United States of America (USA)

• Manufacturer / Brand
• Magnavox Co., Commercial Wireless and Development Co.; San Francisco, later Fort Waye, IN

• Year
• 1956

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 82653

• Picture
• Schematics

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

• Number of Transistors
• 6

• Semiconductors
• 2N172 2N145 2N147 1N295 TI310 TI353 TI353

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz; 2 AF stage(s)

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / Eveready 233 for 4 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 2.75 inch = 7 cm

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: AM-2 Ch= CR729AA, CR729BA and CR729CA - Magnavox Co., Commercial

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 145 x 88 x 40 mm / 5.7 x 3.5 x 1.6 inch

• Notes

• The Photofact Annual Index indicates for this model Magnavox "AM-2 all transistor" set 342, folder 9. and the Transistor Book shows a folder with chassis CR729AA and CR729BA. SAMS says that chassis CR729BA should not have the following components: R3, R6, C10, C17. There is a note: "Chassis number was not stamped on initial production chassis. These chassis are CR729AA."
  
  The AM-2 was coming in three colors: "Cabinet back" in Red, Ivory or Black. It is made for a power supply of a 4 volts mercury battery "Eveready E233".

  The chassis CR729CA was also produced and a picture is available.

  An article about the Magnavox AM-2 is published in Italian in Antique Radio Magazine n. 114 (July-August 2013), page 24.

  ABS cabinet. Genuine leather case with bottom compartment for earphone.

  It was produced also with at least two additional Magnavox brands: Spartan and Sentinel. Externally it was imitated by Ful-Tone TR-601 and several other brands therein reported.

• Net weight (2.2 lb = 1 kg)
• 0.610 kg / 1 lb 5.5 oz (1.344 lb)

• Circuit diagram reference
• Beitman Radio Diagrams Vol. 17, 1957

• Mentioned in
• Photofact Folder, Howard W. SAMS (Set 388 Production Changes Bulletin 201 dated 2-58)

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS

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

• Other Models

• Here you find 1081 models, 499 with images and 831 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Magnavox Co., Commercial Wireless and Development Co.; San Francisco, later Fort Waye, IN