![](https://coimages.sciencemuseumgroup.org.uk/50/651/large_thumbnail_1927_1074__0001_.jpg)
Adler tube amplifier, ZETA
- Made:
- 1961 in Chelmsford
![Description should be changed to read: Adler tube amplifier](https://coimages.sciencemuseumgroup.org.uk/492/795/small_thumbnail_smg00155193.jpg)
![SMG00155193](https://coimages.sciencemuseumgroup.org.uk/442/137/small_thumbnail_smg00155193.jpg)
![Adler tube amplifier, for operation at 408MHz](https://coimages.sciencemuseumgroup.org.uk/18/587/small_thumbnail_1992_0601__0002_.jpg)
Adler tube amplifier, for operation at 408MHz. Built 1961 by English Electric Valve Company for low-temperature measurements on the Zero Energy Thermonuclear Assembly (ZETA). (Note: ZETA is sometimes incorrectly expanded as Zero Energy Thermal Apparatus).