Mrija-301 1971
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Since 1971, the Mriya-301 portable transistor radio receiver of the 3rd class has been produced by the Dnepropetrovsk Radio Plant. ,86e6f450b8cc469628ba70bf2947b049 '' Mriya-301 '' - a radio tape recorder with 9 transistors and 2 diodes with an EPU-6-9V electric playing device. ,86e6f450b8cc469628ba70bf2947b049 Ranges of received waves: DV, SV, KV-1 - 31 ... 25 m and KV-2 - 75 ... 41 m. In the HF range, reception is carried out on a whip (telescopic) antenna. ,86e6f450b8cc469628ba70bf2947b049 Maximum sensitivity at an output power of 50 mW: at LW 500 μV / m, SV 200 μV / m, KV 30 μV. ,86e6f450b8cc469628ba70bf2947b049 Real sensitivity at LW 1.5 mV / m, SV 0.8 mV / m and KV 100 μV. ,86e6f450b8cc469628ba70bf2947b049 Selectivity on the adjacent channel: on DV, SV not less than 40 dB. ,86e6f450b8cc469628ba70bf2947b049 Attenuation of the mirror channel at DV - 30, SV - 26, KV - 12 dB. ,86e6f450b8cc469628ba70bf2947b049 AGC action: When the input signal changes by 26dB, the output voltage changes by 6dB. ,86e6f450b8cc469628ba70bf2947b049 The band of reproducible sound frequencies is 300 ... 3500 Hz. ,86e6f450b8cc469628ba70bf2947b049 The nominal output power, with the THD of the entire channel of the receiver, is not more than 5% - 250 mW. ,86e6f450b8cc469628ba70bf2947b049 The average sound pressure in the band of reproducible sound frequencies is 0.3 Pa. ,86e6f450b8cc469628ba70bf2947b049 Power supply: six elements of type 373. Supply voltage 9 V. The current consumed by the receiver in the absence of a signal is 15 mA. ,86e6f450b8cc469628ba70bf2947b049 The performance of the radio is maintained when the supply voltage drops to 4 volts. ,86e6f450b8cc469628ba70bf2947b049 Duration of operation of the receiver at an average volume from one set of elements of type 373: not less than 100 hours. The electric playing device has 3 speeds of rotation of the disk: 33; ,86e6f450b8cc469628ba70bf2947b049 45 and 78 rpm. ,86e6f450b8cc469628ba70bf2947b049 Current consumed by the electric motor is no more than 85 mA. ,86e6f450b8cc469628ba70bf2947b049 The dimensions of the radio are 288 x 117 x 90 mm. ,86e6f450b8cc469628ba70bf2947b049 Weight with batteries 3 kg. ,86e6f450b8cc469628ba70bf2947b049 ,null,ru,null,null,null,null
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Information from collection of Valery Khartchenko