• Country
• United States of America (USA)

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

• Year
• 1936 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 41206

• • Brand: Coronado

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

• Number of Tubes
• 6

• Valves / Tubes
• 1C6 34 30 34 30 19

• Main principle
• Superheterodyne (common); ZF/IF 456 kHz

• Wave bands
• Broadcast plus 2 Short Wave bands.

• Power type and voltage
• Storage Battery for all (e.g. for car radios and amateur radios) / 6 Volt

• Loudspeaker
• Magnetic loudspeaker (reed) generic.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Coronado 31-BT - Gamble-Skogmo, Inc.;

• Shape
• Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.

• Notes

• Stein "Cathedral & Tombstone Radios" lists 2 bands for this model.

• External source of data
• Ernst Erb

• Source of data
• Machine Age to Jet Age II

• Circuit diagram reference
• Rider's Perpetual, Volume 7 = 1936 and before

• Mentioned in
• Cathedral & Tombstone Radios (page 78.)

• 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