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.
How did Franklin D Roosevelt communicate with the public? We used the radio. He would have Sunday evening fireside chats to discuss his policies and actions to the US People In 1933, how many Americans had radios? About half of Americans had a radio.