Marconi Osram Valve was born of famous parents in exciting times. It was founded by Lord Hirst, an entrepreneur of stature and vision who believed in individual flair and a supportive and 'can do' culture. Its history covers 100 years, three generations, two world wars and the great developments in broadcasting in the post-war periods. The history is intertwined with Marconi, EMI, RCA, Osram and the GEC itself over virtually the whole period of electronics. Softcover, 346 pages.
High quality reprint of the test set-up manual for the military TV-7/U, TV-7A/U, TV-7B/U, and TV-7D/U versions of Hickok tube testers, normally supplied in the lid of the tester. Also contains operating instructions, conversion table for Army VT numbers, and data table for CV type tubes. 83 pages, 0.4 lb., 6.75 x 5.35
This reprint of a 1935 RCA publication shows tube complement, chassis layout and date of manufacture for thousands of radios produced by over 100 different manufacturers. It also contains a tube data chart and base diagrams for RCA receiving tubes. It is very useful for identifying unknown model numbers or determining which tubes belong in a set. 256 pages, 0.9 lb, 5 x 8.25"