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An early 2000s transistor radio (Sony Walkman SRF-S84 transistor radio, released 2001, shown without earphones) Rock 'n roll music became popular at the same time as transistor radios. Parents found that purchasing a small transistor radio was a way for children to listen to their music without using the family tube radio.
The National Panasonic Model RE-784A is a vacuum tube AM/FM table radio from the post-war era (1960s) manufactured by National Panasonic (defunct, now Panasonic). The miniature tube-based circuitry follows the " All American Five " tube design, which allowed a more compact footprint of the radio; suited for sitting atop a fireplace mantle or to ...
Regency TR-1 – the first commercially manufactured transistor radio, it was introduced in 1954. Despite mediocre performance, about 150,000 units were sold, due to the novelty of its small size and portability. SRF-39 – a portable AM/FM radio introduced in approximately 1992 by Sony. [4]
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.
The reflex receiver, invented in 1914 by Wilhelm Schloemilch and Otto von Bronk, [136] and rediscovered and extended to multiple tubes in 1917 by Marius Latour [136] [137] and William H. Priess, was a design used in some inexpensive radios of the 1920s [138] which enjoyed a resurgence in small portable tube radios of the 1930s [139] and again ...
The ZN414 is a low cost, single-chip AM radio integrated circuit. Launched in 1972, the part was designed and supplied by Ferranti , but was second sourced from GEC-Plessey . The ZN414 was popular amongst hobbyists, as a fully working AM radio could be made with just a few external components, a crystal earpiece and a 1.5 V cel l.