The June 2023 issue of IEEE Spectrum is here!

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Book: The History of Radio, in Pictures and Words

A coffee-table book from the American Museum of Radio and Electricity chronicles five centuries of progress

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LOOPY: Compactness is one thing, and true portability is another. For one thing, portability requires its own antenna; the earliest radios used cold water pipes, radiators, and even a bed’s metal box springs buried underground. By 1923, some radio sets featured what became known as a loop antenna, essentially a long antenna wire wound around a frame.
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