GT1C / CV1128 / NGT2 / VGT128 / 10E/15 triode thyratron, and GT1CSS solid-state replacement
This thyratron found many uses as a timebase for radars, and in particular many were used in the Colossus computer which was used at Bletchley Park to crack the codes of the German Lorenz cipher machines. See http://www.codesandciphers.org.uk/lorenz/index.htm, http://www.codesandciphers.org.uk/lectures/ieee.txt and http://www.codesandciphers.org.uk/virtualbp/vcolossus/colossus.htm for further information.
Left: GT1C; centre: NGT2; right: CV1128; bottom: NGT2 GT1C label, a similar label is carried on the VGT128
GT1C SS donated by Bill Wagner
This file was last modified
23:10:40, Wednesday February 23, 2022