Category: Magazines

On the Cover Eimac X-159 developmental duel Triode. In this issue

Inspired by February’s “Tunggram Radio” ad, Abel Santoro senrt in this advertisement, clearly from the Hungarian arm of the company, for tungsram-filament light emitting monodes.   In this issue

The Philips (Mullard, Amperex) E1T electronic decade counter tube, registered with EIA as the 6370 in 1956. “The applied electrical pulses deflect a ribbon-shaped focused electron beam to one of ten stable positions, producing a light spot on a fluorescent sccreen markedd with figures 0-9.” Drawing: J. Haantjes and H. Carter, Classificationof Electron Tubes (New...

On the Cover Bob Reidmuller’s $3 (!) Audion display In this issue

A continuous oven for baking-out TV picture tubes before exhausting, sealing-off, and getter-firing, at the Fabbrica Italiana Valvole Radio-Elettriche (FIVRE), ca 1957. Photo: Giuseppe Vulpetti.   In this issue

A late-“20s RCA promo – a minstrel version of the “Radiotron Man” (see TC cover, Feb. 2009). This is from some dealer sales-support material discovered by Joe Knight.   In this issue

On the Cover The 15D prototype UHF triode. In this issue

Massive “Club 30” TV receiver “designed for use in public places, such as schools, clubs, hospitals, and resturants” (gin mills not mentioned) using the big new 308P4 picture tube. Adapted from the July 1950 issue of the Du Mont Raster. Photo: Wm. Wade, Jr.   In this issue

A family of early-’20s Magnavox triodes, as covered, along with the newly revealed “Kathion” rectifier, in the lead article.   In this issue

On the Cover The inner structure of the ill-fated 6AE4 magnetron In this issue