• Country
• United States of America (USA)

• Manufacturer / Brand
• Air Knight (Butler); Chicago

• Year
• 1946

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 134457

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

• Number of Tubes
• 5

• Valves / Tubes
• 12BE6 12BA6 12AT6 50B5 35W4

• Main principle
• Superheterodyne (common)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• AC/DC-set / 110-120 Volt

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: CA-500 - Air Knight Butler; Chicago

• Shape
• Tablemodel without push buttons, Mantel/Midget/Compact up to 14

• Notes
• The Air Knight model CA-500 is an AC-DC operated AM receiver with right square dial, left cloth wrap-around grille, 2 knobs.

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Date 4-47, set 477, Folder 4, title copy)

• Author
• Model page created by Ernst Erb. See "Data change" for further contributors.

• Other Models

• Here you find 2 models, 2 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Air Knight (Butler); Chicago