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The three-program receiver "Trio PT-207" since 1989 has been producing Vladikavkaz plant Rainbow. PT "Trio PT-207" is intended for work in radio networks of three-program network broadcasting. The voltage in the radio broadcasting line is 30 (15) V. The range of reproducible frequencies in the low frequency channel is in sound pressure 100 ... 12500 Hz, in high frequency channels 100 ... 7000 Hz. Rated output power 1.2 watts. Power consumption 4 watts. Dimensions PT - 115Ñ…360Ñ…65 mm. Weight 1.6 kg. The initial price is 25 rubles. Later, the price of the PT changed many times.