In 1955, the Amur network tube radio receiver was produced in a small series by Plant No. 626 NKV (Sverdlovsk Automation Plant). The radio receiver `` Amur &#39;&#39; is a six-lamp all-wave superheterodyne of the 3rd class operating in the ranges DV - 2000 ... 723 m, SV - 577 ... 187 m, HF in two sub-bands 75.9 ... 40 m and 36 , 3 ... 24.8 m and VHF range 4.66 ... 4.11 m. The receiver has a separate tone control, AGC system. VHF stations are received by internal dipole. The speaker has two 1GD-5 loudspeakers. The nominal output power of the amplifier is 2 W. The range of reproducible frequencies is 100 ... 7000 Hz for radio reception in the FM range and 100 ... 4000 Hz for reception in the AM bands. The receiver is powered by the mains. Power consumption 55 W. Receiver dimensions 510x325x280 mm, weight 11.5 kg. Price 69 rubles 20 kopecks (1961). By design, scheme and parameters, the Amur receiver coincides with the Baikal receiver of the Berdsk radio plant of the first releases without a tuning indicator.

At the VEF plant, a number of receivers and radios based on finger lamps of various designs and parameters were developed. Some blocks and chassis are unified. The devices had a rocker switch, a rotary magnetic antenna and an internal dipole, if the VHF range is provided. Class III receivers have 2 speakers, Class II and higher - four. The names of the receivers are represented by precious stones: &quot;Diamond&quot;, &quot;Amethyst&quot;, &quot;Aquamarine&quot;, &quot;Crystal&quot;, &quot;Ruby&quot;, &quot;Sapphire&quot;, &quot;Topaz&quot;, &quot;Amber&quot;. There was a river series: &quot;Amur&quot;, &quot;Angara&quot;, &quot;Terek&quot;, &quot;Dvina&quot; and a musical series: &quot;Concert&quot;, &quot;Melody&quot;, &quot;Symphony&quot; and others. Some samples were transferred for production to other factories of the USSR (mostly new), some were manufactured by an experimental batch. In the newspaper &quot;Vefietis&quot; at the end of 1955 it was reported that the task of the Ministry of Radio Engineering Industry of the USSR on the development of 15 models of radio equipment and the manufacture of prototypes by the designers and production workers of the VEF had been fulfilled. Most of the devices developed were demonstrated at the 1958 World Exhibition in Brussels and were awarded prizes. Many developments were shown the following year at an exhibition in New York. The radio receiver &quot;Amur&quot; became one of the devices transferred for production to the plant No. 626.

Network tube radio receiver `` Amur ''.