Network tube radio receiver `` Neva-55 ''.
Tube radios.DomesticSince the 1st quarter of 1955, the network tube radio receiver "Neva-55" has been produced by the Leningrad Metalware Plant. The design of the Neva-55 radio receiver does not differ from the Neva-52 receiver, but it differs in its electrical circuit. In the new receiver, a separate local oscillator lamp, a filter choke are excluded, a number of circuit and design changes were made, after which its acoustic properties improved. Frequency range: DV - 415 ... 150 kHz, SV - 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 80 μV. Pickup sensitivity - 0.15 V. Adjacent channel selectivity 46 dB. Attenuation of the mirror channel signal is 60 dB in LW, 50 dB in MW and 30 dB in HF ranges. Attenuation of a signal of frequency equal to the IF, at frequencies of 410 and 520 kHz - 40 dB. The bandwidth of the entire path allows reproducing frequencies of 60 ... 5500 Hz, with an unevenness of 14 dB. The AGC circuit provides a change in the output voltage by no more than 6 dB when the input voltage changes by 60 dB. The drift of the local oscillator frequency in 10 minutes (after 5 minutes of warming up) is no more than 1 kHz on all ranges. Power consumption 80 watts. Receiver dimensions 600x410x310 mm, weight 25 kg.
