6NG-1 1937
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From the autumn of 1937, the networked tube radio "6NG-1" was produced by the Voronezh plant Elektrosignal. Since 1938, the receiver has been serially put on stream, and by the end of May it began to be called as "6N-1" (6-lamp, Desktop, 1st model). The basis for the development was the RCA Victor "6T2" receiver. The first receivers were completed with metal lamps of the companies' 'RCA' ',' 'Ken-Rad' ',' '' Tung-Sol '' and others. In the receivers of later releases, lamps were used: 6F8, 6K7, 6X6, 6F5, 6F6S, 5TS4S. "6H-1" superheterodyne second class, designed to be powered by AC 110, 127, 220 volts. Wave bands: DV "X" - 150 ... 420 kHz, SV "A" - 520 ... 1600 kHz and KV "C" - 5.8 ... 20 MHz. The rated output power of the ULF receiver is 2 watts, maximum (with distortion up to 15%) 4 watts. Power consumption ~ 70 watts. The inverter is 460 kHz. The front panel has four control knobs. The upper center knob is used for frequency tuning, and the lower ones: the left knob is the network switch and the high frequency tone control, the middle range switch and the right volume control. When operating in the KV "C" range, the radio receiver is tuned with a vernier tuning knob having a 50: 1 deceleration. There is an adapter input for playing records with an external electric player. Volume control with toner compensation for bass boost at low volume. The loudspeaker with electric magnet and antiphon coil is used in the radio receiver. Dimensions of the receiver 380x480x225 mm. It is assembled in a wooden lacquered case. The scale was calibrated in khz, with a mark of broadcasting HF bands of 16, 19, 25, 31 and 49 m. The radio receiver was also released with a three-position timbre combined with a network switch. The working range on the scale is highlighted by a triangle. Framing the scale is made of copper or carbolite alloy.
Documentation:
Information from collection of Valery Khartchenko