• Country
• United States of America (USA)

• Manufacturer / Brand
• Radio Development & Research Corp. (RDR) USA

• Year
• 1948

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 82920

• • Brand: Magic Tone

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

• Number of Tubes
• 4

• Valves / Tubes
• 12BE6 12AT6 50B5 35W4

• 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 / 117 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 4 inch = 10.2 cm

• from Radiomuseum.org
• Model: Magic-Tone 508 - Radio Development & Research

• Shape
• Design Radio or Novelty / Gadget - fancy or unusual shape.

• Notes
• The shape is a root beer keg. This set was made of ceramic.

• Circuit diagram reference
• Rider's Perpetual, Volume 19 = 1949 and before

• Literature/Schematics (4)
• Photofact Folder, Howard W. SAMS (Set 38, Date 4/48, Folder 488-9)

• Other Models

• Here you find 11 models, 7 with images and 10 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Radio Development & Research Corp. (RDR) USA