• Country
• United States of America (USA)

• Manufacturer / Brand
• National Acoustic Products; Chicago

• Year
• 1941 ?

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 211086

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• AC/DC-set / 110; 125 Volt

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: Inter Communicating System Model 400 - National Acoustic Products;

• Shape
• Tablemodel, slant panel.

• Mentioned in
• Radio Retailing (Radio & Television R.) (July 1941, p.31)

• Author
• Model page created by Heinz Höger. See "Data change" for further contributors.

• Other Models

• Here you find 5 models, 5 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from National Acoustic Products; Chicago