Electronics – June 1946
The photo description…
CIRCUIT UNDER GLASS – Grid lines and plate lines are within the quadruple-triode VT-158,
used in the TPS-3 radar transmitter. Final assembly at Evans Signal Laboratory.
The March 1964 issue of Popular Electronics had a story on the VT-158
Titled THE SECRET TUBE THAT CHANGED THE WAR
page created January 18, 2004