70 Years of Radio Tubes and Valves: a guide for electronic engineers historians and collectors

Maker and role
John W. Stokes, Author
Production date
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Object detail

Accession number
"In this book an attempt has been made to outline the evolution of radio receiving tubes and the part they played in the development of the domestic radio receiver. The information contained in the following pages is presented primarily for the benefit of tube collectors, particularly American tube collectors as there are more of them! At the same time it is hoped that the book will be of wider interest and will be a source of reference to all who are interested in the history and development of the vacuum tube." - preface

Acknowledgments / nomenclature - terminology / preface / generic vacuum tube technology / in the beginning / the grid / world war 1 / usa after world war 1 / some early american independents / another grid / a turning point / penta-hodos / developments in tetrodes / double-filament and multiple tubes / the return of the diode / frequency changers / metal envelopes / octal-based and all-glass tubes / power rectifiers / electron ray tubes / transmitting tubes / miniaturisation / contact / bulbs / some american independents / canadian and australian tube manufacture / the british electrical companies / some british independents / philips / usa after world war 2 / tube collecting as a hobby / glossary / index
Signature/Marks and Type
"Best wishes from John W Stokes" Hand-written
Physical description
247 pages : photographs, illustrations, charts ; 28 cm
First ed. signed by author
Credit line
John W. Stokes. 1982. 70 Years of Radio Tubes and Valves: a guide for electronic engineers historians and collectors, PUB-2019-25.2. Walsh Memorial Library, The Museum of Transport and Technology (MOTAT).


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