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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.
Around the turn of the 20th century Guglielmo Marconi, developed the first apparatus for long distance radio communication. Reginald A. Fessenden became the first to send audio (wireless telephony) by means of electromagnetic waves in 1907.By 1910 these systems had come to be referred to by the common name radio.round the turn of the 20th century Guglielmo Marconi, developed the first apparatus for long distance radio communication. Reginald A. Fessenden became the first to send audio (wireless telephony) by means of electromagnetic waves in 1907. By 1910 these systems had come to be referred to by the common name radio.