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The portable transistor radio receiver of the 4th class Khazar-403 has been producing the Baku Radio Plant since 1980. The year of production of the Khazar-403 radio receiver was immediately marked by two significant events. This year, the Olympiad-80 took place in Moscow and turned 60 years old in the Azerbaijan SSR in the capital of which, Baku produced the Khazar radio (translated from the Azerbaijani language Caspian). The jubilee receiver was designed for construction and design that is different from the usual radio reception; see photos of this jubilee variant in photos 4, 7, 9 and 10. Olympic registration is in the IF Belov reference book. Since 1981, the receiver was produced in the usual design. Radio Khazar-403 is a portable superheterodyne assembled on eight transistors and two diodes. The radio works in the ranges DV and CB. Its sensitivity ranges: AU 1,5 mV / m, NE 0.8 mV / m. The adjacent channel selectivity is 20 dB. Rated output power 300 mW, maximum 600 mW. The band of reproduced sound frequencies 250 ... 3550 Hz. Powered by two 3336L batteries. The dimensions of the radio receiver are 256x187x83 mm. Weight 1.1 kg. In the second photo, the original prototype of the radio.