UTS-48 (Radiouzel) 1948
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From the autumn of 1947, the network radio receiver PTS-47 was produced by the State Union Plant No. 641 in Petropavlovsk, Kazakhstan. The PTS-47 radio receiver was developed in 1946 at the plant design bureau on the instructions of the Ministry of Communications based on the Pobeda radio receiver, the first batch was released in 1947, but the main release began in 1948. "PTS-47" - Receiver Broadcast Network, 1947. Plant No. 641 was the only plant in the USSR that produced broadcasting equipment. The PTS-47 receiver was the first and therefore their production often stopped. The last receiver, PTS-47, left the factory"™s assembly line in July 1954, and a total of 6275 units were released. The radio "PTS-47" is designed to work in conjunction with the radio station "UTS-48" produced by the plant in parallel and as a separate broadcast receiver. A separate receiver had five control knobs, a case and a false panel with inscriptions, and the receivers built into the rack of radio centers did not have a case, the false panels and the tone control knob are excluded. The receiver is made according to the superheterodyne scheme with one frequency conversion on 10 (or 9) radio tubes. It has six ranges: DV 750 ... 2000 m, NE 200 ... 550 m and 4 KV: survey 40 ... 75 m (III) and stretched 30.6 ... 32.6 m (IV), 24.8 ... 26 m (V) and 19.25 ... 20.3 m (VI). Sensitivity on all ranges of 30 µV. The selectivity on the adjacent channel is 42 dB, on the mirror channel in LW, LW 36 dB, HF 24 ... 26 dB. The output power of the amplifier is 250 mW. In addition to the main control knobs in a separate receiver, and this is from left to right: tone control on high frequency, volume control with a network switch, tuning knob, range switch and mode switch (receive-adapter-microphone) on the front panel to the right of the knobs there was a switched adapter . In the center of the front panel there is a scale calibrated in meters and in kilohertz and megahertz, to the left of the scale there is an eye of the optical indicator of the setting. Behind the radio chassis are jacks for connecting the antenna and grounding, a monitoring loudspeaker (low-resistance headphones) and output connectors for the broadcast signal.The receiver is powered from the network through a separate independent power supply with a full-wave tube rectifier. If the receiver '' PTS-47 '' is compared with household devices, then it can be attributed to the first class model. The price of the receiver in 1947 money is 1300 rubles.
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Information from collection of Valery Khartchenko