720A
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Shure; Chicago,: 720A [Microphone/PU] ID = 475114 335x700
Select picture or schematic to display from thumbnails on the right and click for download.
For model 720A, Shure; Chicago, Evanston, Niles (IL)
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Year:
1938 ??
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Category: Microphone or Pick-up element |
Wave bands |
- without |
Details |
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Power type and voltage |
No Power needed |
Loudspeaker |
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Power out |
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from Radiomuseum.org |
Model: 720A - Shure; Chicago, Evanston, |
Material |
Various materials |
Notes |
Crystal microphone. Uni-, bi- or non-directional avaiable through a selector switch. |
Price in first year of sale |
39.00 $ |
Mentioned in |
The radio amateur's handbook 1938, cat. sec. p. 515 |
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.