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Vacuum Tubes in Wireless Communication: A Practical Textbook for Operators and Experimenters (Classic Reprint)
by:Elmer E. Bucher
In preparing the text of this book, the author had two principal objects in view: (1) to provide the Government and commercial wireless operator with a brief and simple explanation of the functioning of the circuits of the vacuum tube, (2) to lay before the experimenter and the practical operator the numerous circuits employed from time to time in the...
In preparing the text of this book, the author had two principal objects in view: (1) to provide the Government and commercial wireless operator with a brief and simple explanation of the functioning of the circuits of the vacuum tube, (2) to lay before the experimenter and the practical operator the numerous circuits employed from time to time in the laboratory and in commercial practice. Outside of its obvious commercial value, the perfected vacuum tube affords the experimenter a most fascinating field of research. This is well evidenced by the fact that a single bulb with associated tuning apparatus connected to a four wire aerial 200 feet in length permits wireless signals to be received over distances of 2,500 to 4,000 miles in daylight, and up to 6,000 miles in darkness. A ny experimenter may prove this statement by adopting one of the circuits disclosed in this volume. TO THE STUDENT AND EXPERIMENTER Many of the circuits shown in this book are not employed in either Government or commercial wireless communication. Some will be found to be duplicates in so far as their mode of operation is concerned, the various parts of the receiving apparatus being re-arranged or re-grouped. The diagrams represent, however, the connections disclosed from time to time and in order that the student may review step by step the progress in the application of the vacuum tubes, it was thought best to place before him the use of the tube in all its phases. The connections most suitable for different conditions of wireless service suggest themselves, once the fundamental operating principle of the vacuum tube is understood. It will very probably develop that some of the explanations of working given herein both for the fundamental arrangements and for systems which are extensions of the simple or fundamental circuits shovn in the first three chapters, will not stand the test(Typographical errors above are due to OCR software and don't occur in the book.)
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