Category: Magazines

On the Cover An oridinary Type 76. In this issue

A celebration of the addition of an LRS Relay and ita AEG amplifier to the museum of the University of Electro_Communications in Chofu City, Tokyo. The celebrents are, left to right, Hisashi Ohtsuka (who assembled the collection), Prof. Yukawa (museum curator, Bengt Svensson (who played a mojor role in having the LRS transferred from the...

Two versions of the Eital-McCullough 4W20,000A power tetrode: at left., an early version (1952), cut open to reveal the “bombardment” cathode; at right, one from 1955. This tube is documented extensively in TC for oct. 2010. A very early bulbedd model, possibly the X486 protype, is illustrated on Norm Wilson’s n6jv.com web site.   In...

On the Cover George A. Fathauer’s new book. See p. 6 for details In this issue

Cover illustration from a ’30s Marconi Valves data booklet.   In this issue

A group of Eitel-McCullough stacked-ceramic receiving tubes from the “CD” project of the mid-50’s. Details in the article inside.   In this issue

On the Cover Ross Smith’s display of two-digit tubes in the Equipment Contest at Rochester. See p.2 for details. In this issue

A classically styled promotion poster for the Italian tube maker Zenith, with Factory located in Monza. Beginning about 1929, it made a line of European and American- designed receiving tubes. The original art is 10″ by 15-1/2″. It has been reproduced as a lithograph on steel and in a book on old-time posters.   In...

A set of classic tube-test labels. See the editorial pages for more details.   In this issue

On the Cover Svetlana Engineer wins AWA Tyne award. See p. 1 In this issue