• Year
  • 1948/1949
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 33783

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

 Technical Specifications

  • Number of Tubes
  • 4
  • 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)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: B-44 "Tom Thumb" - Automatic Radio Mfg. Co.;
  • Shape
  • Very small Portable or Pocket-Set (Handheld) < 8 inch.
  • Dimensions (WHD)
  • 180 x 90 x 120 mm / 7.1 x 3.5 x 4.7 inch
  • Notes
  • The Automatic model B-44 "Tom Thumb" Bike Radio is a battery operated portable superheterodyne receiver designed to easily attach to, and detach from, two metal brackets (included with the radio) clamped to the handle bars of a bicycle.

  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 19 = 1949 and before

 Collections | Museums | Literature

Collections

The model B-44 "Tom Thumb" is part of the collections of the following members.

 Forum