Vol. 7, No. 3

Volume 7, Number 3

Volume 7, Number 3

On the Covers

In this issue
  • The 1AP5, Offspring of the 913 (“sort of”)
  • Philco and the PenDD61
  • Standard Electric Argentina
  • Results – Boyer Estate Auction
  • Type Codes – Varien Tubes
  • Date Code for Bell Labs Tubes
  • Marathon Tubess and Their Telegraphic Codes
  • “The Tube Collector” (Radio News)
  • A Look at Hitachi Receiving Tubes
  • The 2E27 – An Existence Proof?

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