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A transistor radio is a small portable radio receiver that uses transistor-based circuitry. Following their development in 1954, made possible by the invention of the transistor in 1947, they became the most popular electronic communication device in history, with billions manufactured during the 1960s and 1970s.
AM was the undisputed king of the airwaves in 1952, but that didnât stop Blaupunkt from introducing the first in-car FM radio. 1953: Becker Mexico Introduced. Beckerâs iconic Mexico radio launched this year, arguably the first premium in-car radio. It had AM/FM and the first fully automatic station-search button.