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Sperry Gyroscope Company
October 1944 Radio News

October 1944 Radio News
October 1944 Radio News Cover - RF Cafe[Table of Contents]

Wax nostalgic about and learn from the history of early electronics. See articles from Radio & Television News, published 1919-1959. All copyrights hereby acknowledged.

Special Insert: Radio-Electronic Engineering Department

This 1944 advertisement from Sperry Gyroscope Company claims it owns the copyright for the word "Klystron." According to the Wikipedia entry: "The name klystron comes from the Greek verb κλύζω (klyzo) referring to the action of waves breaking against a shore, and the suffix -τρον ("tron") meaning the place where the action happens. The name "klystron" was suggested by Hermann Fränkel, a professor in the classics department at Stanford University when the klystron was under development." Furthermore, it says American electrical engineering brothers Russell and Sigurd Varian were the inventors of the klystron. This 2-part article entitled, "Microwave Klystron Oscillators," appeared in consecutive 1952 issues of Radio & Television News magazine. The video helps explain how the klystron tube works. I am always amazed at how someone came up with such an idea in the first place. This is the earliest patent, dated 1938, I could find for Varian's klystron (US2272165A - High frequency electrical apparatus).

Sperry Gyroscope Company Ad

Sperry Gyroscope Company, October 1944 Radio News - RF CafeKlystron:

Mathematically, here's the inside story.

The formula in the picture above is an expression of bunching as it takes place in the Klystron tube.

This Sperry tube converts DC energy into radio frequency energy by allowing an electron beam to become bunched, or pulsating, between spaced grids.

The ultra-high-frequency microwaves thus generated can be concentrated into a narrow beam and directed with great accuracy.

Various other forms of the Klystron have been developed by Sperry to aid in the amplification and reception of ultra-high-frequency waves. Today they are vital parts of many a device used by our Armed Forces.

The name "Klystron" is a registered trade-mark of the Sperry Gyroscope Company, Inc. Like other Sperry devices, Klystrons are also being made during the emergency by other companies.

Klystrons are now being produced in quantities, and certain types are available. Write us for information.

Sperry Gyroscope Company

Great Neck, N. Y • Division of the Sperry Corporation

Gyroscopics • Electronics• Automatic Computation• Servo-Mechanisms



Posted March 25, 2021

Temwell (RF components)

About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024


    Kirt Blattenberger,


RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

Copyright  1996 - 2026

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