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"
Raytheon was one of the largest manufacturer of vacuum tubes for both military and civilian applications. This was originally published in 1945 and this is a high quality reprint of the original. Inside is tube data of all Raytheon tubes including electrical characteristics, basing connections, style and size of base, style and size of bulb as well as recommended substitutions. Also included are two articles on making short wave receivers 41 pages, softcover, 0.35 lbs, 8.5 x 11