Crystal Microphone MU 4
Astatic Corp.; Conneaut (OH)
- Country
- United States of America (USA)
- Manufacturer / Brand
- Astatic Corp.; Conneaut (OH)
- Year
- 1939
- Category
- Microphone or Pick-up element
- Radiomuseum.org ID
- 226716
-
- alternative name: Omnitronics LLC
- Wave bands
- - without
- Power type and voltage
- No Power needed
- Loudspeaker
- - For headphones or amp.
- from Radiomuseum.org
- Model: Crystal Microphone MU 4 - Astatic Corp.; Conneaut OH
- Notes
-
Crystal microphone MU 4.
Output level -58 dB, recomended where microphone is to be used long distance from the amplifier.
- Price in first year of sale
- 23.42 USD
- Mentioned in
- Radio Shack Catalog (1939, page 65)
- Author
- Model page created by a member from D. See "Data change" for further contributors.
- Other Models
-
Here you find 46 models, 44 with images and 12 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Astatic Corp.; Conneaut (OH)