• Country
• United States of America (USA)

• Manufacturer / Brand
• Camfield Radio Mfg. Co., Oakland, CA

• Year
• 1925

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 172881

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• from Radiomuseum.org
• Model: Duoformer 22 - Camfield Radio Mfg. Co.,

• Notes
• Kit of 3 Duoformer 22, to build the 5 tube Duodyne Circuit, employing 3 Camfield Straightline Condensers.

• Price in first year of sale
• 10.00 $

• Literature/Schematics (1)
• Radio News, Nov.1925, p.733

• Author
• Model page created by Konrad Birkner † 12.08.2014. See "Data change" for further contributors.

• Other Models

• Here you find 6 models, 5 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Camfield Radio Mfg. Co., Oakland, CA