The electric tube radio receiver "Electrosignal-2" in 1948 was experimentally produced by the Voronezh plant "Electrosignal". ,86e6f450b8cc469628ba70bf2947b049The receiver was developed at the end of 1946, but it was produced only in a pilot batch, and on its basis the Rodina-47 battery receiver, its internal name ELS-3, was developed. ,86e6f450b8cc469628ba70bf2947b049"ELS-2" is assembled on 6Zh6S, 6A7, 6K3, 6G7, 6P3S, 6E5S, 5Ts4S lamps. ,86e6f450b8cc469628ba70bf2947b049The case contains perpendicular frames made of wire, which are the internal antenna of the LW and MW ranges. ,86e6f450b8cc469628ba70bf2947b049The directional change knob is located on the right side of the case. ,86e6f450b8cc469628ba70bf2947b049Wave ranges: DV 150 ... 410 kHz (2000 ... 732 m). ,86e6f450b8cc469628ba70bf2947b049CB 520 ... 1500 kHz (577 ... 200 m). ,86e6f450b8cc469628ba70bf2947b049KV-1 - 8.55 ... 18.3 MHz (35 ... 16.4 m). ,86e6f450b8cc469628ba70bf2947b049KV-2 - 4.25 ... 8 MHz (70.5 ... 37.5 m). ,86e6f450b8cc469628ba70bf2947b049IF - 460 kHz. ,86e6f450b8cc469628ba70bf2947b049The sensitivity to an outdoor antenna on the LW, MW ranges is about 100 µV, on the HF sub-bands about 200 µV. ,86e6f450b8cc469628ba70bf2947b049When receiving radio stations on the frame, the sensitivity to LW, SV sharply decreases to 0.5 mV / m. ,86e6f450b8cc469628ba70bf2947b049Pickup sensitivity - 0.6 V. Adjacent channel selectivity is about 26 dB in the MW range and 32 dB in the LW range. ,86e6f450b8cc469628ba70bf2947b049Selectivity on the mirror channel is more than 34 dB at LW, more than 28 dB at MW and 14 dB at HF. ,86e6f450b8cc469628ba70bf2947b049AGC provides a voltage change at the output by 6 dB with a change at the input by 60 dB. ,86e6f450b8cc469628ba70bf2947b049Average output power 3.5 watts. ,86e6f450b8cc469628ba70bf2947b049The range of reproducible sound frequencies is 150 ... 4000 Hz. ,86e6f450b8cc469628ba70bf2947b049Power consumption from the electrical network is 70 watts.,86e6f450b8cc469628ba70bf2947b049,null,ru,null,null,null,null