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 ...

THE appearance of the fourth edition of this book will do much to dispel the impression, prevalent in some quarters, that the technique of radio direction finding has been rendered obsolete by the ...

Every two years, competitors from 25 different countries descend upon a forest, armed with the direction-finding tools of a bygone era. They wave large, pronged radio receivers — the kind you ...

The Pentagon wants more accurate high-frequency direction-finding antenna for small aircraft. Credit: U.S. Army The Defense Innovation Unit is looking to find a prototype small high-frequency ...