• Country
• United States of America (USA)

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

• Year
• 1956 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 82543

• • Brand: Pierce Airo

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

• Number of Transistors
• 4

• Semiconductors

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz; 2 AF stage(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / 9 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 2.75 inch = 7 cm

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: K-544A - DeWald Radio Mfg. Corp.,

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 5.87 x 3.5 x 1.87 inch / 149 x 89 x 47 mm

• Notes
• Transistors: 2N112, 2N112A, 2N132, 2N138

• Circuit diagram reference
• Beitman Radio Diagrams Vol. 17, 1957

• Literature/Schematics (1)
• SAMS Servicing Transistor Radios, vol. TSM-2

• Literature/Schematics (2)
• Photofact Folder, Howard W. SAMS (Set 347 Folder 4 Date 2-57)

• Author
• Model page created by Egon Penker. See "Data change" for further contributors.

• Other Models

• Here you find 442 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.