Practical Wireless Telegraphy 1917

UC-NRLF Mb 27M WIRELESS TELEGRAPH BY ELMER E.BUCHE Practical \Vireless Telegraphy A COMPLETE TEXT BOOK for STUDENTS of RADIO COMMUNICATION BY ' ELMER E. BUCHER Instructing Engineer Marconi Wireless Telegraph Co. of America Member Institute of Radio Engineers Fully Illustrated WIRELESS PRESS, INC Ubrary COPYRIGHT, 1917 BY WIRELESS PRESS. INC. S. L. PARSONS & CO., INC., Printers, 45 Rose St., New York. AUTHOR'S NOTE In preparing this volume, the author has endeavored to give the non-technical student and the practical telegraphist an understanding of the functioning of present day commercial wireless telegraph apparatus, and he has varied the usual procedure followed in text books by covering first in a general way the fundamentals of electricity, electromagnetic induction, the dynamo, the motor, the motor generator, storage batteries, charging panels, etc., a knowledge of which is quite as essential to the practical wireless worker as the more complicated phenomena of radio-frequency circuits. It was not possible in the space available to treat the elements of electricity and magnetism in detail, but an effort was made to cover some of the more important principles to prepare the student to understand the functioning of radio telegraph apparatus. As in the case of the ordinary electrician working in the more common branches of electrical practice, one of the…