• Year
  • 1939/1940
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 37690
    • Brand: Pierce Airo

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

 Technical Specifications

  • Number of Tubes
  • 6
  • Main principle
  • Superheterodyne (common); ZF/IF 455 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) / Ø 6.5 inch = 16.5 cm
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: 705 - DeWald Radio Mfg. Corp.,
  • Shape
  • Tablemodel with Push Buttons.
  • Dimensions (WHD)
  • 15 x 0 x 0 inch / 381 x 0 x 0 mm
  • Notes
  • SW1 (2.7-8.2MHz), SW2 (7.8-24MHz) bands. Separate oscillator tube (76). Range, 12,5-35, 34-112 and 170-555 Meters.

  • Price in first year of sale
  • 36.95 $
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 11 = ca. 1940 and before
  • Literature/Schematics (3)
  • The DeWald Folder for 1940, Form. 50M 1-40 L.

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