Spheroid 74A

Spheroid 74A; Shure; Chicago, (ID = 2055564) Microphone/PU Spheroid 74A; Shure; Chicago, (ID = 2055565) Microphone/PU
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Spheroid 74A; Shure; Chicago, (ID = 2055564) Microphone/PU
Shure; Chicago,: Spheroid 74A [Microphone/PU] ID = 2055564 1148x2100
Select picture or schematic to display from thumbnails on the right and click for download.
For model Spheroid 74A, Shure; Chicago, Evanston, Niles (IL):
QST November 1935 page 97
Country:  United States of America (USA)
Manufacturer / Brand:  Shure; Chicago, Evanston, Niles (IL)
Year: 1935 Category: Microphone or Pick-up element
Wave bands - without
Power type and voltage No Power needed
Loudspeaker - - No sound reproduction output.
Power out
from Model: Spheroid 74A - Shure; Chicago, Evanston,
Material Metal case
Shape Miscellaneous shapes - described under notes.

The Shure 74A Spheroid is a non-directional microphone with a crystal element.

Price in first year of sale 37.50 USD
Mentioned in QST (November 1935 page 97)

Model page created by Wayne Childress. 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.