Vol. 8, No. 4

April 18, 2023July 19, 2024By 41
Volume 8, Number 4
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Volume 8, Number 4

On the Cover

A Western Electric 240A with the radiator and anode cut away to show internal construction. Note that the water inlet and oulet fittings are displaced from each other, presumably to induce a spiral flow of the colling water.

Photo from the late Bell Labs Historical Museum.

In this issue
  • The LRS Relay – Research and Development in Vienna and Berlin, 1905-1912
  • Tektronix CRT History, Part 2 – The First Tek CRTs
  • Rider’s Tube-Audio Manual
  • The Truth About Tube Prices
  • Tube Computers – RCA Field Report
  • The “Gnome” Tube

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