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See also:
The Twenty-Kilowatt Tube - Irving Langmuir - GE Tubes 1915-18
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Type VT-11 a type G Pliotron with the UV four pin bayonet base. It was used by the Signal Corps in the USA from 1918 and found service during WWI.
This version differs slightly from VT-11 in that the anode cup has been redesigned.
From the Tyne Collection.
The original box. The dimensions are 57 mm square and 127 mm tall.
The box end with Type VT-11 printed on it.
Thanks to Joe Gruber for sending the images.
The balloon envelope is 35 mm in diameter and, excluding the UV base pins, is 101 mm tall.
References: J Gruber, & 1047. Type VT-11 was first introduced in 1918. See also 1918 adverts.


Absolute Maximum Operating Conditions
Updated February 08, 2021.
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