Vol. 12, No. 3

Volume 12, Number 3

A fine old WECo (pre Bell Labs) shot of a “tennis-ball” repeater tube. Source: Jerry Vanicek.

In this issue
  • History and Development of the All-Metal Radio Tube
  • Some Thoughts on Metal Tubes
  • Crosley Declares in Favor of Metal Tubes
  • Edison Lamp in Receiver
  • The Hytron HY117
  • “VEC”
  • The WC-23
  • Tube Failures in ENIAC
  • Universal Service Calls
  • Weird Tube of the Month: The RCA A109
  • Soviet Era Amatuer Rig

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