• Country
• United States of America (USA)

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

• Year
• 1951 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 41157

• • Brand: Coronado

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

• Number of Tubes
• 5

• Valves / Tubes
• 1U4 1R5 1U4 1U5 3V4

• Main principle
• Superhet with RF-stage; ZF/IF 455 kHz; 2 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Line / Batteries (any type) / 90; 9; 117 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• from Radiomuseum.org
• Model: 05RA4-43-9876B - Gamble-Skogmo, Inc.;

• Notes
• Selenium Rectifier .Line supply is AC/DC. Built in loop antenna.

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 22, covering 1951

• Literature/Schematics (1)
• Beitman Radio Diagrams, Vol. 11, 1951

• 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