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Foreign Tube Substitution Data
May 1959 Electronics World

May 1959 Electronics World

May 1959 Electronics World Cover - RF Cafe Table of Contents 

Wax nostalgic about and learn from the history of early electronics. See articles from Electronics World, published May 1959 - December 1971. All copyrights hereby acknowledged.

I suppose a more appropriate title for this chart would be "Foreign Valve Substitution Data," considering that most (if not all) of Europeans refer(red) to vacuum tubes as "valves." As with having posted scores of Radio Service Data Sheet pages for the benefit of hobbyists who restore and service vintage radio equipment, I also post other hard-to-find reference resources when I find them. Sure, the number of people looking for this information is extremely small, but they are extremely grateful for this when in the throes of finding replacement tubes (valves). Posting a hyperlink to this page on the RF Cafe homepage will assure that the major search engines find it quickly.

Foreign Tube Substitution Data

Foreign Tube Substitution Data, May 1959 Electronics World - RF CafeForeign tubes that are hard to replace are Listed by Sylvania, with possible domestic substitutions.

Code*: ER denotes exact replacement. NR denotes nearest replacement. Socket and/or wiring changes may be involved here, or slightly different electrical characteristics and ratings may have to be considered in some circuits.

Note: The increasing sale of imported receivers and audio equipment has resulted in the problem of obtaining replacements for some of the unfamiliar tubes used. This list, reprinted through the courtesy of Sylvania Electric Products Inc., 1740 Broadway, New York 19, N. Y., is believed to be accurate. However, neither Sylvania nor Electronics World assumes responsibility in case of error. The complete Sylvania list also includes foreign-made replacements, available in this country, for other foreign-made tubes that are not generally marketed here. These additional listings will appear in a forthcoming issue.



Posted July 23



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    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...

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