Vol. 9, No. 5

April 18, 2023July 19, 2024By 55
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Volume 9, Number 5

On the Cover

The Eitel-McCullough X-7 triode of mid-1942, one of many exploratory designs that eventually yielded the 527 radar tube.

In this issue
  • Review: Radiola – The Golden Age of RCA, 1919-1929
  • Tube Exhibits at AWA-Rochester
  • Tektronix CRT History – Part 5, The Hybrid Years, 1961-1964
  • Front Ends of Early Radar Receivers
  • Tubes vs. Transisters, 1952
  • Tubes With Quicksilver
  • Weird Tube of the Month: 6047

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