Vol. 15, No. 3

Volume 15, Number 3

The Philips EC157 microwave triode, registered in 1963 with the Electronic Industries Association (but not cataloged) by Philips’ subsidiary Amperex. While physically similar to the much earlier “lighthouse” tubes (2C43 etc.) from General Electric, this one is substantially redesigned and is rated at much higher frequency (6GHz).

In this issue
  • The Alesa Vaic Story
  • 1941 at Eimac
  • Improved Vacuum Tube Reliability Through Maintenance

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