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May 1959 Electronics World
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.
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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 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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