First picture of the Moorhead Electron Relay

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Alan Larsen
Alan Larsen
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25.Oct.14 21:11

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The August 1916, issue of The Electrical Experimenter magazine was the first advertisement to offer a picture of the 1916 Moorhead Electron Relay. As noted in the advertisement, the tube was available with either a single filament or a double filament for $1.50 more.

At this time Moorhead was advertising under the name of Pacific Laboratories.


This article was edited 25.Oct.14 22:53 by Alan Larsen .