• Country
• United States of America (USA)

• Manufacturer / Brand
• Gamble-Skogmo, Inc.; Minneapolis, MN

• Year
• 1960 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 139885

• • Brand: Coronado

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

• Number of Transistors
• 6

• Semiconductors
• 2S52 2S45 2S53 2S54 2S56 2S56

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / 1 x 9 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 1.75 inch = 4.4 cm

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Coronado RA50-9900A - Gamble-Skogmo, Inc.;

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

• Notes

• Battery operated transistorized portable AM receiver.

  See also Coronado Transistor Six Little Gem RA50-9900 (43-9900).

• Mentioned in
• Collector's Guide To TrR1 Bunis trans.94 (1996, page 71)

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Set 504 folder 10 date 10-60)

• Author
• Model page created by Peter Hoddow. See "Data change" for further contributors.

• Other Models

• Here you find 705 models, 331 with images and 635 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Gamble-Skogmo, Inc.; Minneapolis, MN