CPE Dictionary: 1  Official CPE Dictionary v2.3 - 35.72MB, Updated: 9/2/2017 12:00:00 AM EST - gz format, zip format. 2  Official CPE Dictionary v2.2 - 37.26MB, Updated: 9/2/2017 12:00:00 AM EST - gz format, zip format. 3  CPE Dictionary Search. 4  CPE Dictionary Growth Statistics.
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.
On 27 August 1920, regular wireless broadcasts for entertainment began in Argentina, pioneered by the group around Enrique TelÃ©maco Susini, and spark gap telegraphy stopped. On 31 August 1920 the first known radio news program was broadcast by station 8MK, the unlicensed predecessor of WWJ (AM) in Detroit, Michigan.