we 203a

West. Elect. 203-A
DC Det/Amp Triode
1917


The tube shown is the early version of the 203-A, manufactured using the same basic structure as the repeater tubes and was originally coded as the Type J. The internal structure was redesigned to eliminate the fragile glass arbor and improve the mechanical stability. This redesigned version was supplied to the military as the VT-1 (Army) and CW-933 (Navy). The tubes supplied to the military did not have the 203-A marking in the wax of the base.

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