• Year
  • 1946
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 37720
    • Brand: Pierce Airo

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

 Technical Specifications

  • Number of Tubes
  • 5
  • 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
  • AC/DC-set / 105 - 125 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 4 inch = 10.2 cm
  • Material
  • Catalin (a brand name for a thermosetting polymer popular in the 1930s and 1940s - a phenol formaldehyde resin - like Bakelite, but a two-stage process with a lot of work afterwards).
  • from Radiomuseum.org
  • Model: A-501 Harp - DeWald Radio Mfg. Corp.,
  • Shape
  • Design Radio or Novelty / Gadget - fancy or unusual shape.
  • Dimensions (WHD)
  • 9.75 x 6.25 x 5.5 inch / 248 x 159 x 140 mm
  • Notes
  • DeWald on the dial, not on the case. There is a prewar model, too: 501A, which uses partly miniature tubes.
    Colors: brown-yellow, red-yellow or yellow.
  • Net weight (2.2 lb = 1 kg)
  • 2.520 kg / 5 lb 8.8 oz (5.551 lb)
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 15 = 1947 and before

 Collections | Museums | Literature

Collections

The model A-501 is part of the collections of the following members.

 Forum

Forum contributions about this model: DeWald Radio Mfg.: A-501 Harp

Threads: 1 | Posts: 1

Maße: 250 / 165 / 165 ;

Konrad Birkner † 12.08.2014, 04.Mar.04

Weitere Posts (1) zu diesem Thema.