• Country
• United States of America (USA)

• Manufacturer / Brand
• Stewart Warner Corp.; Chicago (IL)

• Year
• 1933

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 60655

• • Brand: Ferrodyne

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

• Number of Tubes
• 4

• Valves / Tubes
• 6A7 6F7 41 80

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

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC)

• Loudspeaker
• Permanent or electro-dynamic (moving coil), system not known yet.

• Material
• Wooden case

• from Radiomuseum.org
• Model: 1236 Cavalier Ch= R-123 - Stewart Warner Corp.; Chicago

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

• Notes
• Model 1236 uses chassis R123; mains supply 115 V (60 or 25-133 cycles) or 100-260 V (40-133 cycles, export model).

• External source of data
• Ernst Erb

• Source of data
• The Radio Collector's Directory and Price Guide 1921 - 1965

• Circuit diagram reference
• Rider's Perpetual, Volume 6 = 1935 and before

• Mentioned in
• Machine Age to Jet Age II (page 290.)

• Literature/Schematics (1)
• Rider's Perpetual, Volume 5

• Literature/Schematics (2)
• Cathedral & Tombstone Radios (page 257.)

• Other Models

• Here you find 2122 models, 397 with images and 1979 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Stewart Warner Corp.; Chicago (IL)