• Year
  • 1936
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 64129
    • alternative name: American Bosch Magneto
    • Brand: Essex

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

 Technical Specifications

  • Number of Tubes
  • 4
  • Number of Transistors
  • Semiconductors
  • K55C
  • Main principle
  • Superheterodyne (common); ZF/IF 465 kHz
  • Tuned circuits
  • 5 AM circuit(s)
  • Wave bands
  • Broadcast (MW) and Tropical/Marine/Police Band(s) = 150-200m.
  • Power type and voltage
  • AC/DC-set / 115 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Power out
  • 1.5 W (unknown quality)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: 604B - United American Bosch Magneto
  • Shape
  • Tablemodel without push buttons, Mantel/Midget/Compact up to 14
  • Dimensions (WHD)
  • 10.5 x 7.5 x 6 inch / 267 x 191 x 152 mm
  • Net weight (2.2 lb = 1 kg)
  • 9 lb (9 lb 0 oz) / 4.086 kg
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 8 = 1937 and before
  • Literature/Schematics (1)
  • Riders 8-7, 8

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