Rossija-303 1974
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Since 1974, the portable radio receiver "Russia-303" has been produced by the Chelyabinsk PO Polet. ,86e6f450b8cc469628ba70bf2947b049 Portable radio receiver of the 3rd class `` Russia-303 '' is assembled on 8 transistors and 2 diodes. ,86e6f450b8cc469628ba70bf2947b049 It is designed to receive radio stations with AM modulation, in the LW, SV bands on the internal magnetic antenna and in the KB sub-bands, on the telescopic one. ,86e6f450b8cc469628ba70bf2947b049 Frequency ranges: DV - 150 ... 408 kHz, SV - 525 ... 1605 kHz, KV-1 - 9.5 ... 12.1 MHz, KV-2 - 3.95 ... 7.3 MHz ,86e6f450b8cc469628ba70bf2947b049 ... ,86e6f450b8cc469628ba70bf2947b049 The IF is 465 kHz. ,86e6f450b8cc469628ba70bf2947b049 Sensitivity in the range of DV - 1.5 mV / m, SV - 0.7 mV / m, KB - 100 μV. ,86e6f450b8cc469628ba70bf2947b049 Selectivity on the adjacent channel in LW and MW - 46 dB. ,86e6f450b8cc469628ba70bf2947b049 Selectivity for the mirror channel in the range of LW - 26 dB, MW - 30 dB, KB - 14 dB. ,86e6f450b8cc469628ba70bf2947b049 AGC action: when the input signal changes by 26 dB, the output voltage changes by 6 dB. ,86e6f450b8cc469628ba70bf2947b049 Rated output power 100 mW. ,86e6f450b8cc469628ba70bf2947b049 The frequency range is 300 ... 3550 Hz. ,86e6f450b8cc469628ba70bf2947b049 Power supply from 4 elements 316. Dimensions of the model 215х125х47 mm. ,86e6f450b8cc469628ba70bf2947b049 Weight 1 kg. ,86e6f450b8cc469628ba70bf2947b049 Since 1987, the Russia-303 receiver has been referred to as the Russia RP-303. ,86e6f450b8cc469628ba70bf2947b049 In terms of parameters, it is analogous to the described receiver, and the design is similar to the lilac receiver. ,86e6f450b8cc469628ba70bf2947b049 However, to increase the range of items, the production of the "Russia-303" model also continued. ,86e6f450b8cc469628ba70bf2947b049 During the production process, all elements of the radio receiver, such as a loudspeaker, piezofilter and resistors and capacitors, were replaced with modern ones. ,86e6f450b8cc469628ba70bf2947b049 ,null,ru,null,null,null,null
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Information from collection of Valery Khartchenko