• Country
• United States of America (USA)

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

• Year
• 1940–1970 ?

• Category
• Microphone or Pick-up element

• Radiomuseum.org ID
• 130459

Click on the schematic thumbnail to request the schematic as a free document.

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: 707A - Shure; Chicago, Evanston,

• Dimensions (WHD)
• 61 x 61 x 83 mm / 2.4 x 2.4 x 3.3 inch

• Notes
• Shure 707A pressure-operated diaphragm type crystal microphone, response 30 to 7.000 Hz, two versions with different body known - older mics had the smaller bodies, the newer having the larger 520 bodies. Iridescent Gray and Chrome, net weight 360 g. Above data taken from the 1949 version.

• Source of data
• -- Original-techn. papers.

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

• Other Models

• Here you find 134 models, 129 with images and 52 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Shure; Chicago, Evanston, Niles (IL)