• Country
• United States of America (USA)

• Manufacturer / Brand
• Atwater Kent Mfg. Co.; Philadelphia, USA

• Year
• 1922

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 74527

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• No Power needed

• Material
• Bakelite case

• from Radiomuseum.org
• Model: 3488 Variometer - Atwater Kent Mfg. Co.;

• Notes
• board mount unit; outer coil inside of the sphere;

• Source of data
• A.Atwater Kent, The Man, 2002

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

• Other Models

• Here you find 507 models, 330 with images and 332 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Atwater Kent Mfg. Co.; Philadelphia, USA