Spheroid 74A
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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
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|
Year:
1935
|
Category: Microphone or Pick-up element |
Wave bands |
- without |
Details |
|
Power type and voltage |
No Power needed |
Loudspeaker |
- - No sound reproduction output. |
Power out |
|
from Radiomuseum.org |
Model: Spheroid 74A - Shure; Chicago, Evanston, |
Material |
Metal case |
Shape |
Miscellaneous shapes - described under notes. |
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.