Just a small sample of pictures from old time tube collections. The above is an early picture of the Arthur Larson tube collection. Arthur was a patent lawyer but that is not to say all these examples were involved in patent litigation, but some may have. Authors scan from the former Tyne/Vanicek collection. Click all...
John Howard Morecroft, 1881-1934, was an electrical engineer professor at Columbia University and at the Pratt institute. He was also the expert scientist for the US Navy during WW1. and worked in the laboratory of M. I. Pupin in submarine detection for the Navy. He served as president of the IRE in 1924, wrote several...
I always had and have a facination with the early RC, RCA, and Cunningham tube boxes probably because they were the first and most common and easiest to find and buy startting in the mid 1970’s. As most collectors know, most tube shipping boxes are quite often harder to find in good condition than the...
Modern vacuum tube collectors have been trying to find concrete evidence that the DeForest Type 20 was not only made but designated type 20. This author believes he has found what has been missing or perhaps re-found again within my information? As all collectors know, Otis Moorhead was the first to bring together DeForest and,...
Conrad Schickerling, besides his radio vacuum tubes, made various electrical products, and claimed to have been in business since 1898. Here are a few of those products named below- Ultra-Violet sun lamps, Automatic Ultra-Violet aquarium heaters for tropical fish, Ultra-Violet vapor health lamps, Ultra-Violet window-glass light fixtures(reflectors), Ultra-Violet water purifiers, Ultra-Violet water and air-cooling apparatus,...
Click on the pictures above for a larger view. These exceptionally beautiful UV Le Radion and Le Clairton vacuum tubes, made in the 1923 time- line, imply they were made by a French maker, but were they? It seems not. A contemporary shipping box for the Le Radion brand indicates they could have been made...
Pacific Radio News magazines were first published in January, 1917 by the San Francisco Radio Club with H. W. Dickow as editor, P. R Fenner as manager, L. O Fassett as assistant manager, and D. B. Mcgown as assistant editor, It was a monthly magazine featuring up-to-date radio communication news from around the country, and...
Very little is known about the W. E. VT-15 save for these facts: It is rare. Perhaps only 4 or 5 known. It has the same specs as the Western Electric 215-A but with a “Duck Foot” splayed base pin configuration for possible use by the US Navy. Specs of the W.E. 215 A here:...
Figs.1, and 2 show the CF 185 detector tube with the US Navy 3- point base. The side pin and one of the bottom pins are the filament connections. These were made by DeForest for Navy use starting in Nov., 1916 as can be seen in the document on the left below. Etched on the...
Sonatron made very interesting and at this date, somewhat rare amplifier units with red, white, and blue colored tubes that made for a outstanding marketing scheme. The buyer could choose what their MU tubes to be included with his purchase according to what was needed, higher volume, tone quality, high amplification, etc. It is also...