• Country
• United States of America (USA)

• Manufacturer / Brand
• DeWald Radio Mfg. Corp., Pierce Airo Inc.

• Year
• 1946/1947

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 37722

• • Brand: Pierce Airo

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

• Number of Tubes
• 5

• Valves / Tubes
• 12SA7 12SK7 12SQ7 50L6GT 35Z5GT

• 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 cm = 1.6 inch

• Material
• Wooden case

• from Radiomuseum.org
• Model: A-503-R Streamliner - DeWald Radio Mfg. Corp.,

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 10.5 x 6.75 x 5.75 inch / 267 x 171 x 146 mm

• Notes
• The DeWald Model A-503 is an AC/DC operated AM Superheterodyne Receiver with self contained Loop Antenna.

• External source of data
• Ernst Erb

• Source of data
• Collector's Guide to Antique Radios 4. Edition

• Circuit diagram reference
• Rider's Perpetual, Volume 15 = 1947 and before

• Mentioned in
• The Radio Collector's Directory and Price Guide 1921 - 1965 (Beitman Radio Diagrams 1949)

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Date 9-46, Folder 464-22)

• Literature/Schematics (2)
• Machine Age to Jet Age II

• Literature/Schematics (3)
• Table Top Radios Vol. 4 Stein 2003

• Literature/Schematics (4)
• Radio Retailing (Radio & Television R.) (July 1947 page 48.)

• Other Models

• Here you find 443 models, 195 with images and 344 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from DeWald Radio Mfg. Corp., Pierce Airo Inc.