Transmitting valve
- Made:
- circa 1940 in San Francisco
- maker:
- Heintz & Kaufman Limited
Gammatron high frequency transmitting valve by Heintz and Kaufman
Details
- Category:
- Radio Communication
- Object Number:
- 2017-2004
- Materials:
- metal (unknown) and glass
- Measurements:
-
overall: 179 mm 64 mm,
- type:
- valve
