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Unidyne 55AV

Unidyne 55AV; Shure; Chicago, (ID = 982300) Microphone/PU
Unidyne 55AV; Shure; Chicago, (ID = 982301) Microphone/PU
Unidyne 55AV; Shure; Chicago, (ID = 475145) Microphone/PU
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Unidyne 55AV; Shure; Chicago, (ID = 475145) Microphone/PU
Shure; Chicago,: Unidyne 55AV [Microphone/PU] ID = 475145 395x700
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For model Unidyne 55AV, Shure; Chicago, Evanston, Niles (IL)
Country:  United States of America (USA)
Manufacturer / Brand:  Shure; Chicago, Evanston, Niles (IL)
Year: 1942 ?? Category: Microphone or Pick-up element
Wave bands - without
Power type and voltage No Power needed
Power out
from Model: Unidyne 55AV - Shure; Chicago, Evanston,
Material Metal case
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

Model page created by Otto Frosinn. See "Data change" for further contributors.

All listed radios etc. from Shure; Chicago, Evanston, Niles (IL)
Here you find 122 models, 116 with images and 44 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.