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Title: This book fills a need...
Review: For several years I've been wondering that the author has been doing gathering old QSL cards and other radio trivia.Berg's book is a wonderful payback to all those who've contributed. He has written an excellent, if not exhausive, history of international broadcasting through the end of the second world war, with an emphasis on American stations. (The are several volumes about Nazi propaganda broadcasts you could also consider).If you only read one book on the hitory of radio, it should be Empire of the Air. But if you read two, or have a special interest in shortwave (as I do) this is a good choice. I hope there will be a volume covering 1945 onwards -- perhaps just about shortave in the cold war.
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