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The tube network radio receiver "6N-25" since 1945 was produced by the Novosibirsk Radio Plant.
The receiver is built according to a superheterodyne circuit on six octal metal lamps and operates in the ranges of LW, CB and two HF.
The receiver case is finished in dark wood.
The scale is horizontal, without backlight.
Vernier device with a 20: 1 deceleration.
There are jacks for connecting a pickup.
Ranges: LW 150 ... 420 kHz, CB 520 ... 1600 kHz, KV-I 9.45 ... 12.1 MHz, KV-II 15.1 ... 17.9 MHz.
IF 460 kHz.
Sensitivity at LW, NE - 150 μV, KB-I, II - 400 μV.
Adjacent channel selectivity 30 ... 34 dB.
Selectivity for the mirror channel 12 ... 26 dB.
The range of reproduced frequencies is 100 ... 6000 Hz.
Average power output 3 watts, maximum 8 watts.
Power consumption from the network is 100 watts.
The mass of the receiver is 14.5 kg.