Vol. 9, No. 2

April 18, 2023July 19, 2024By 67
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Volume 9, Number 2

On the Cover

The Eimac X-1, a developmental triode from May, 1942, using the bulb and base of a 250T, with new anode and heavier filament taking 25 anps instead of 10.5.

In this issue
  • The Sylvania Subminiture Tube Program
  • All-Metal Tubes
  • Philco Views Metal Tubes
  • Squelching the 1851
  • Physical Exhibits in Arnold-Langmuir Litigation
  • Weird Tube of the Month: The 5738
  • An “Industry Directory” from RCA
  • Launching the UV-201: A GE View
  • “Specifying” the SE-3119

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