Neva-55 1955
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The radio receiver network lamp "Neva-55" from I quarter of 1955 was produced by the Leningrad Metalware Plant. The radio "Neva-55" is not different in design from the receiver "Neva-52", but it differs in electrical circuit. In the new receiver, a separate lamp of the local oscillator, filter choke was removed, a number of changes were made to the circuit and design, after which its acoustic properties improved. Frequency range: DV - 415 ... 150 kHz, CB - 160 ... 1520 kHz, KV-I: 3.95 ... 7.5 MHz, KV-II 9.2 ... 10 MHz, KV- III 11.5 ... 12.1 MHz. IF 465 kHz. Sensitivity in all ranges of 80 µV. Pickup sensitivity - 0.15 V. The adjacent channel selectivity is 46 dB. The attenuation of the signal of the mirror channel is 60 dB in the DW, 50 dB in the MW, and 30 dB in the HF dmapband. The attenuation of the signal frequency equal to the inverter, at frequencies of 410 and 520 kHz - 40 dB. The bandwidth of the entire path allows you to play the frequency of 60 ... 5500 Hz, with non-uniformity of 14 dB. The AGC circuit provides a voltage change at the output of no more than 6 dB when the input voltage changes by 60 dB. Leaving the frequency of the local oscillator for 10 minutes (after 5-min. Warm-up) is not more than 1 kHz on all bands. Power consumption 80 watts. Receiver dimensions 600x410x310 mm, weight 25 kg.
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Information from collection of Valery Khartchenko