• Year
  • 1933
  • Category
  • Car Radio, perhaps also + sound player/recorder
  • Radiomuseum.org ID
  • 63969
    • 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
  • 5
  • Number of Transistors
  • Main principle
  • Superhet with RF-stage; ZF/IF 456 kHz
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Storage Battery for all (e.g. for car radios and amateur radios) / =6 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: 140A - United American Bosch Magneto
  • Shape
  • Chassis only or for «building in»
  • Dimensions (WHD)
  • 9.5 x 8.875 x 7.125 inch / 241 x 225 x 181 mm
  • Notes
  • AVC. Vibrator for +B. Single unit with tubeless B battery eliminator. Dash remote.

    Factory price $47.95

  • Price in first year of sale
  • 79.25 $
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 4 = ca. 1934 and before
  • Mentioned in
  • -- Original prospect or advert

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