CPI or Communications & Power Industries is the new name for the former tube division of Varian Associates.
Varian is a golden old name in the field of high power tubes, magnetrons, klystrons and other special purpose tubes. CPI is proudly maintaining the tradition. The Varian brothers perfected, if not virtually invented the Klystron tube. | ![]() |
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They are also keeping the EIMAC division going strong. EIMAC was formed when 2 guys thought they had a better way. | ![]() | We have a small number of these beautiful boxes available for sale. Although there is a
tube type shown on the reverse side, they are in EXCELLENT condition. We do NOT have any tubes for these boxes. Box only: $5.00 |
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Here's another Varian brand that few people know about. National is now associated with Richardson. Apparently, at some time, Richardson bought the rights to the name from Varian. Or maybe Richardson is a spin-off of National. At any rate the CPI/Varian connection no longer exists. However, for continuity, the National page is linked below. | ![]() |
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Last Update: 12/22/00
Web Author: Pax Comm
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