Type G Pliotron with US Navy Type designation CG-886. This exhibit has a three pin base that was used for a short time. The anode is connected to a side contact.
The same valve fitted with the UV four pin bayonet base was used by the Signal Corps in the USA and designated VT-11.
The anode is made of nickel and is a closed cylinder about 8 mm in diameter and 10 mm long.
From the Tyne Collection.
The original box. The dimensions are: 57 mm square and 127 mm tall.
The box end with Type CG-886 printed on it.
Thanks to Joe Gruber for sending the image.
The balloon envelope is 35 mm in diameter and, excluding the UV base pins, is 101 mm tall.
References: J Gruber, 3002 & 1047. Type CG-886 was first introduced in 1918. See also1918 adverts.
