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The three-program receiver "Era-204" since 1985 produced Vladikavkaz plant Rainbow. Three-program Era-204 receiver (from 1987 Era PT-204) is designed to receive programs transmitted over packed wire broadcasting networks, with a line voltage of 30 V. The operating frequency range for sound pressure: through LF channels is 100 ... 10,000 Hz, on the HF channels - 100 ... 6300 Hz. The nominal frequency range at the linear output on the low frequency channels is 63 ... 10,000 Hz, the high frequency channels are 63 ... 6300 Hz. The limits of regulation of the sensitivity of the LF channel 19 ... 30 V, HF - 0.25. 3 mV. Rated output power 300 mW. Consumed 2.5 watts. Dimensions PT 325h98h185 mm. Weight 1.8 kg.