The Oreol-23TB-307 / D television receiver for black-and-white images has been produced by Ryazan Television Plant OJSC since the 1st quarter of 1991.
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"Oreol 23TB-307 / D" is a small-sized portable TV set with integrated circuits - an analogue of the TV set "Sapphire 23TB-307 / D" of the same plant.
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A TV with the index "D" was produced with an installed UHF range selector.
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The TV uses a 23LK13B-2 kinescope.
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The TV set provides reception of television broadcasts on any of the channels of the MB and UHF (D) range;
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listening to sound on headphones when the loudspeaker is off.
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AGC provides a stable image.
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The influence of interference is minimal with the help of AFC and F. Image size 140x183 mm.
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Sensitivity in the MB range - 40 μV, UHF - 70 μV.
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Resolution - 350 lines.
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The rated output power is 0.2 W.
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The range of reproducible frequencies is 400 ... 3550 Hz.
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Power supply from the network 198 ... 242 V, from an autonomous source 12.5 ... 15.8 V. Power consumption from the network - 30 W, from an autonomous source - 20 W.
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The dimensions of the TV are 250x350x230 mm.
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Weight 5.5 kg.
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Since 1993 the plant has been producing the Oreol-23TB-311 / D TV set similar to the Oreol-23TB-307 / D and Sapphire 23TB-307 / D models.
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