• Year
  • 1939/1940
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 37709
    • Brand: Pierce Airo

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

 Technical Specifications

  • Number of Tubes
  • 7
  • Main principle
  • Superheterodyne (common); ZF/IF 456 kHz; 2 AF stage(s)
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast plus 2 Short Wave bands.
  • Power type and voltage
  • AC/DC-set / 105-125 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: 812 - DeWald Radio Mfg. Corp.,
  • Shape
  • Tablemodel with Push Buttons.
  • Notes
  • Separate oscillator tube (76). Tuning eye. Range 12,5-35, 34-112 and 170-555 Meters.

  • Price in first year of sale
  • 45.00 $
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 12 = ca. 1941 and before
  • Literature/Schematics (3)
  • The DeWald Folder for 1940, Form. 50M 1-40 L.

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