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The portable cassette recorder Riga-111 has been produced since 1984 by the Riga Radio Plant named after them. Popov. The radio tape recorder is an upgrade of the model "Riga-110" and consists of a receiver operating in the ranges of DV, SV, KV-1 ... KV-4, VHF and a cassette recorder. The design provides: 3 fixed settings in the ranges of DV, ST and VHF. AFC in the VHF-FM range, electret microphone, ARUZ, dial gauge, recording level and power supply, auto-stop after the end of the tape, the ability to connect speakers and headphones. The radio tape recorder is powered from the mains or 6 elements of 373. Sensitivity in the ranges: LW - 2 mV / m, SW - 1.5 mV / m, HF - 0.35 mV / m, VHF - 100 µV. The frequency range in the AM path 200 ... 3550 Hz, FM 125 ... 12500 Hz, magnetic recording on the LV - 63 ... 10000 Hz. Rated output power 1 watt. Dimensions of the model 386x280x120 mm, weight 6.5 kg.