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About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024

Webmaster:

    Kirt Blattenberger,

    BSEE - KB3UON

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 typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

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CBS Tubes Advertisement
August 1958 Radio News Article

August 1958 Radio & TV News
August 1958 Radio & TV 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.

This full-page advertisement by CBS Tubes caught my eye because of the vast array of vacuum tube shapes and sizes. Most people, even back in the era of tube-based electronic equipment, think of the standard 12AX7 type rounded top, cylindrical glass package with a plastic or phenolic base and some metal pins sticking out of the bottom. Television and radio sets were full of them, and those are what you or your parents or grandparents would yank from the chassis and take to the local drug store or electronics shop to plug into the big tube tester that was commonplace back then. However, as this photo shows there was a great variety of special glass and inner electrode configurations. If you have ever attended the MTTS (IMS) show, you might have seen the equipment display provided by the National Electronics Museum. It has an amazing collection of tube types. I was going to post a photo of a lamp I made out of a thyratron tube that was used in the AN/MPN-14 airport surveillance radar I worked on in the USAF, but alas, I cannot find it. I can't even remember at this point what happened to it - probably broke in one of our many household moves.

CBS Tubes Ad

CBS Tubes Advertisement, August 1958 Radio News - RF CafeCBS-Hytron offers you over 400 industrial types

You will find CBS-Hytron's expanded industrial tube line the most comprehensive and the most dependable. See it at your distributor's. Ask him or write us for the CBS-Hytron catalogs you need: Power Tubes, E-290T ... Military and Special-purpose Tubes, E-290S ... Gas Tubes and Power Rectifiers, E-290C ... Phototubes and Photocells, E-290P. More reliable products through Advanced-Engineering CBS-HYTRON, Danvers, Massachusetts • A Division of Columbia Broadcasting System, Inc.

 

 

Posted October 7, 2019

Anatech Electronics - RF Cafe

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Exodus Advanced Communications Best in Class RF Amplifier SSPAs
 

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