• Country
• United States of America (USA)

• Manufacturer / Brand
• Shure; Chicago, Evanston, Niles (IL)

• Year
• 1942 ??

• Category
• Microphone or Pick-up element

• Radiomuseum.org ID
• 306548

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: Unidyne Dynamic Microphone 55B - Shure; Chicago, Evanston,

• Notes

• 200-250 Ohms Impedance

• Literature/Schematics (1)
• - - Manufacturers Literature (Shure Data Sheet #195D, January 1942)

• Author
• Model page created by Pavek Museum. See "Data change" for further contributors.

• Other Models

• Here you find 134 models, 129 with images and 51 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Shure; Chicago, Evanston, Niles (IL)