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Superior Instruments
December 1939 and January 1940 Radio News

December 1939 Radio News

December 1939 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.

As of the year 2020 there was an estimated 7.8 billion people in the world. Most of them, thanks to the technology invented and provided by capitalist societies, have some form of Internet access. A large fraction of them have paid nothing for it (while hating those who provided it) - I'm just sayin'. Out of those 7.8B people, surely a handful have already or will in the future search the World Wide Web (WWW) in pursuit of information on vintage test equipment, either as fodder for some publication, for reference in obtaining particular models or for service data. In the interest of those folks, I go to the trouble of scanning and posting content like this test equipment advertisement by Superior Instruments (aka SICO). It appeared in a 1939 issue of Radio News magazine. You're welcome.

Here is a page with an incredibly well-preserved TV11 Tube Tester. Here is a Model 1240 Tube Tester, as seen in the ad.

Superior Instruments Ad

Superior Instruments, December 1939 Radio News - RF CafeDecember 1939

The New 1130-S Signal Generator

With Audio Frequencies



The New Model 1280


Combines Models 1240 and 1250


The New Model 1250



The New Model 1240

Tube Tester


Superior Instruments Co.

136 Liberty St., Dept. RN12 New York, N. Y.


January 1940

Superior Instruments, January 1940 Radio News - RF CafeThe New Channel-Analyzer

Follows the Signal from Antenna to Speaker


Superior Instruments Co.

136 Liberty St., Dept. RN12 New York, N. Y.



Posted April 21, 2021

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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...

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