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เนื้อหาย่อ : Most books are writien because the author, who may have been, or is a teacher, has found that he is not satisfied with existing material on the subject at a particular level - this is true of Basic Radio. Many fine texts have been written on radio engineering. However, books on radio communications for the student or beginner have fallen short in that they either fail to communicate to the reader by being too mathematical or too technical, or they attempt to oversimplify the subject and thus "'waier down'' the technical material to a point where there is little foundation left on which the student can build his future knowledge of radic. During his many years of teaching experience, the author found the great coin municative value in the visualized approach to teaching radio. As an insiructor, the author had first-hand knowledge of the benefits and drawbacks of a wide variety of teaching methods. This six-volume course on Basic Radio represents the final development of the author's notes and illustrations in the teaching of the subiect of radio. An idea is illustrat 'd on every page of text. Each illustration drives home a com- plete idec, with many callouts to enable the reader to get maximum instructive benefit from each illustration. Basic Radio represents the finest development of instructive material for the teaching of radio in book form. It is truly a radio course palatable to the student.