• Country
• United States of America (USA)

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

• Year
• 1942 ??

• Category
• Microphone or Pick-up element

• Radiomuseum.org ID
• 133630

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

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Material
• Metal case

• from Radiomuseum.org
• Model: Unidyne 55AV - Shure; Chicago, Evanston,

• Notes
• The Unidyne 55AV from Shure is a "Voice Unidyne Cardioid Dynamic Microphone". Impedance: 35 - 50 Ohm. Type 55BV is for 2oo - 250 Ohm (49 USD), and 55CV is a high impedance type (49 USD). These types of microphones have also been manufactured by Shure for David Bogen - see model U10X there. It has been a standard microphone for radio stations etc. - also at times of Elvis Presley etc.

• Price in first year of sale
• 47.00 $

• Mentioned in
• Ad. in: The radio amateur's handbook 1942; Cat. sec. p. 75

• Author
• Model page created by Otto Frosinn. 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)