• Country
• United States of America (USA)

• Manufacturer / Brand
• Astatic Corp.; Conneaut (OH)

• Year
• 1975 ??

• Category
• Microphone or Pick-up element

• Radiomuseum.org ID
• 271181

• • alternative name: Omnitronics LLC

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Loudspeaker
• - For headphones or amp.

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Noise Cancelling Microphone 539 - Astatic Corp.; Conneaut OH

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Author
• Model page created by a member from A. See "Data change" for further contributors.

• Other Models

• Here you find 46 models, 44 with images and 12 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Astatic Corp.; Conneaut (OH)