The book of radio; a complete, simple explanation of radio reception and transmission, including the outstanding features of radio service to the public by private and government agencies (1922)

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FOREWORD Radio Communication, peculiarly a science of the people, is recognized popularly through the agency of radio broad- casting. Few realize that there is another new field equally as fascinating. Radio now links the distant airplane with its home station, and in addition to providing a means of voice communication, it also provides the pilot with all the instincts of a homing pigeon, carrying him across the sky through fog and storm to his destination. Imagine the keen thrill of the pilot on hearing the friendly voice of his home radio station as he battles his lonely way through a midnight storm. Picture all our inhabitants of the far places of the earth—the miner on the mountain top, the snowbound rancher, the flood victim, the occupant of the sick bed, the mariner on the high seas, and the pilot in the cloudland—all bound together under the protecting hand of radio. Here lies one of its deep, grip- ping appeals. One use which is perhaps novel to most radio enthusiasts was developed during the war. A squadron of airplanes (usually three, six or nine) is equipped with receiving sets using trailing wire antennae. A so-called voice control airplane is equipped with a radio telephone transmitting set. A squadron of air- planes can thus be maneuvered with the greatest ease in a manner similar to the maneuvering of a squad of soldiers. You can believe that the first time these maneuvers were con- ducted in Washington a profound impression was made. All the well-known evolutions, such as right or left turn, right or left reverse, loops, spins, dives and changes of formations, could be accomplished with uncanny precision.