• Country
• United States of America (USA)

• Manufacturer / Brand
• Automatic Radio Mfg. Co.; Boston (MA)

• Year
• 1955

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 115718

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

• Number of Tubes
• 4

• Valves / Tubes
• 1V6 1AH4 1AJ5 1AG4

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

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / 1.5 + 45 Volt

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

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Tom Thumb 528 - Automatic Radio Mfg. Co.;

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

• Dimensions (WHD)
• 149 x 94 x 40 mm / 5.9 x 3.7 x 1.6 inch

• Price in first year of sale
• 35.00 $

• Mentioned in
• Funkgeschichte der GFGF (Nr. 109 (1996) S. 124)

• Literature/Schematics (1)
• Schiffer, The Portable Radio in American Life

• Author
• Model page created by Günther Stabe † 19.8.20. See "Data change" for further contributors.

• Other Models

• Here you find 401 models, 163 with images and 321 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Automatic Radio Mfg. Co.; Boston (MA)