![](https://coimages.sciencemuseumgroup.org.uk/41/177/large_thumbnail_1975_0359__0001_.jpg)
Granular carbon transmitter
![Granular carbon transmitter made by the Western Electric](https://coimages.sciencemuseumgroup.org.uk/468/986/medium_smg00280576.jpg)
Granular carbon transmitter made by the Western Electric Company and used by the National Telephone Company between 1890 and 1895
Details
- Category:
- Telecommunications
- Object Number:
- 1923-259
- type:
- transmitter
- credit:
- Institution of Electrical Engineers