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Wireless Direction Finding

Nature volume 143, pages 702703 (29 April 1939) | Download Citation



WHEN the first edition of this book appeared in 1922, interest in wireless direction-finding was confined to a comparatively few individuals who were engaged either in the practice of the art for navigational purposes or in its application to a scientific study of the propagation of radio waves. Since the second edition appeared more than ten years ago (see review in NATUBE, March 10, 1928), the scope and application of wireless direction-finding have increased considerably. Its use in connexion with marine navigation has become more widespread and has acquired greater reliability, while more recently it has become a very important aid to the navigation of aircraft. The appearance of the third edition, dealing in a comprehensive manner with the most up-to-date aspects of the subject, definitely establishes Keen's book as a standard work, which should be in the hands of all those engaged in the design, manufacture and installation of direction-finders, or in the study and application of the results obtained therewith.

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