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The rural radio center "TU-50" (100) '' Beam '' since 1955 has been producing the Barnaul Radio Plant. The installation "TU-50" ("TU-100") '' Beam '' is intended for broadcasting programs of broadcasting stations and local radio programs over wired networks in rural areas. The installation combines a low-frequency amplifier with an output power of 50 or 100 W (depending on the design and name), with an output voltage of 15, 30 and 150 volts, an electroplay device for playing gramophone records at a speed of 78 rpm, as well as all-wave DV , SV and KV radio receiver type "TPS-54S" and a device for mixing signals. The "TU-50" (100) '' Beam '' radio center includes a microphone, a portable monitoring loudspeaker and a street horn speaker of the 10URG1 type.