Portable transistor radio "Regency TR-1".
Portable radios and receivers.ForeignThe "Regency TR-1" portable transistor radio has been produced since the fall of 1954 by the American company "Pocket Radio", Regency (IDEA). It is considered the first transistor receiver in the world, although the Japanese company Tokyo Tsushin Kogyo, later Sony, also prepared the Sony TR-5 model for release in the fall of 1954, but it went into series only in the fall of 1955 under the name "Sony TR-55". The "Regency TR-1" is a four-transistor superheterodyne. AM range - 540 ... 1600 kHz. IF - 262 kHz. Power supply - 22.5 volt battery. Maximum output power 100 mW. The range of reproducible sound frequencies is 450 ... 2500 Hz. Receiver dimensions 76x127x32 mm. Weight 300 grams. Due to poor selectivity in the mirror channel, noise of transistors, low volume outside the city and poor sound quality, the radio receiver was modernized several times, which led to a noticeable improvement in its consumer qualities.
