Network tube radio receiver `` Neva-48 ''.
Tube radios.DomesticSince 1948, the network tube radio receiver "Neva-48" has been produced by the Leningrad Mechanical Plant Leninets, the Leningrad Plant named after Kozitsky, the Rybinsk Instrument-Making Plant and the Leningrad Metalware Plant. With the release of this receiver, there are many inconsistencies. Somewhere it is referred to as Neva, somewhere as Neva-48, and somewhere as Neva-49 (the latter concerns the start of production of the receiver by the Leningrad Metalware Plant since December 1949 ). The Neva-48 radio receiver is the second modernization of the Neva radio receiver (Marshal-M). The difference between the new radio receiver is as follows: In the HF sub-bands, the overlap is reduced. To stretch the scale, shortening capacitors are connected in series with the tuning capacitor. In the UPCH, smooth bandwidth control is introduced, combined with tone control in the low-frequency path. Variable communication between the loops is carried out by moving one of the coils in each IF filter. A preamplifier based on a 6Ж7 tube has been introduced. The rest is similar to previous models.
