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A classic Emerson transistor radio, circa 1958. A transistor radio is a small portable radio receiver that uses transistor-based circuitry.Previous portable radios used vacuum tubes, which were bulky, fragile, had a limited lifetime, consumed excessive power and required large heavy batteries.
Regency TR-1 transistor radio. The Regency TR-1 was the first commercially manufactured transistor radio, introduced in 1954.Despite mediocre performance, about 150,000 units were sold, due to the novelty of its small size and portability.
This made Sony the first company to produce commercial transistor radios from the ground up. American company Regency had launched their Regency TR-1 transistor radio earlier in 1954, but bought the transistors from Texas Instruments. Printed circuit boards were used, which was unusual for the time. [6] [8] [3]
The RCA model R7 Superette superheterodyne table radio. This is a list of notable radios, which encompasses specific models and brands of radio transmitters, receivers and transceivers, both actively manufactured and defunct, including receivers, two-way radios, citizens band radios, shortwave radios, ham radios, scanners, weather radios and airband and marine VHF radios.
1954: Regency introduced a pocket transistor radio, the TR-1, powered by a "standard 22.5V Battery". 1960: Sony introduced their first transistorized radio, small enough to fit in a vest pocket, and able to be powered by a small battery. It was durable, because there were no tubes to burn out.
Another first for portable radios was the unique dial scale used in the 1000 and later series of Trans-Oceanics. The 1000 was designed with a cylinder dial scale that would rotate with the band switch allowing only that particular band scale to show. [9] Zenith Royal 1000 All Transistor Trans-Oceanic Short Wave Portable Radio, circa 1957.
Perdio Radio logo. Perdio Radio was a British electronics company (Perdio Electronics Limited) founded by Derek Willmott (born 4 January 1924) and Joyce Willmott in 1955. . Former RAF pilot Derek Willmott was a DECCA researcher developing RADAR applications and was already an inventor, with designs for multiple miniaturisation applications in consumer electronics, including designs for ...
Their first product was a vacuum tube radio released in 1955, [3] [4] and their first transistor radio was the KR-6TS-1 radio released in the spring of 1957 [5] [6] at the price of 14,000 yen. [7] Through the 1960s, Koyo had manufactured and sold millions of portable transistor radios, particularly, their best-selling model KTR-624 had been ...
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