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Portable radio "Sport-4" since 1970 produced Dnepropetrovsk radio plant. The receiver of the 3rd class "Sport-4" is intended for reception in the ranges: DV, SV, KV-I - 31 ... 25 m and KV-II - 75 ... 41 m. Sensitivity on DV 1.6 , CB 0.6, KV 0.3 mV / m. The adjacent channel selectivity is 36 dB. The attenuation of the mirror channel on the DV 30, CB 32, KV-I, KV-II 18 dB. The band reproduced by the loudspeaker frequency 250 ... 4000 Hz. Rated output power 100 mW. Power is supplied from 4 elements 316. The rest current is 10 ma. Dimensions of the model 195x110x47 mm. Weight 900 gr. The receiver is released in a limited series and, in addition to its design, repeats the receivers Sport and Sport-2.