Since the beginning of 1949, the radiolamp lamp network "Ural-49" was produced at the Sarapul plant named after Sergo Ordzhonikidze and at Plant No. 626 NKV (Sverdlovsk Automation Plant).
The appearance and design of the Ural-49 radiol became the basis for the creation of subsequent radiol of the Ural series.
Radiol Ural-49 consists of a 6-tube receiver and an electric player at 78 rpm.
Frequency ranges up to 1951: LW 150 ... 410 kHz, CB 520 ... 1500 kHz, HF 4.5 ... 15.5 MHz.
Output power 2 W, with a distortion coefficient of 7%.
The bandwidth of the entire path ensures the reproduction of the audio frequency range 100 ... 4000 Hz.
The AGC provides a 10 dB change in output voltage when the input changes by 26 dB.
Power consumption 100 W (with an asynchronous motor 110 W) and 80 W when received.
When switching to the operation of the electronic control unit, the lighting of the scale and indicator turns off.
Dimensions of the radio 549h393h310 mm, its weight is 24 kg.
In early 1950, the radiola was modernized in Ural-49M.
Changed the electrical circuit in which some elements and lamps are replaced by others.
Ranges changed.
The SW range was expanded to 1600 kHz, and the HF range of 4 ... 12.1 MHz was adapted to the future GOST of 1951. The EPU of the first radiol consisted of a synchronous electric motor of the SM-1 type and an electromagnetic pickup AM mounted on a wooden panel.
The pickup and engine were turned on by a separate switch.
The electric motor was connected to a power transformer so that when switching to any of the supply voltages, 110 volts were always supplied to it.
In the upgraded radiol, the EPU is changed.
It uses an asynchronous motor type DAG with a disk and an electromagnetic pickup ZS.
A hitch has been introduced, connected to the pickup lever and automatically supplying power to the engine, depending on the position of the pickup relative to the phonograph record.
EPU assembled on a metal chassis.
The appearance and characteristics of the basic and modernized radiol are the same.
In the initial period of modernization, there were radios having combined elements, for example, a range of 19 meters and a new electric motor.
,null,ru,null,null,null,nullThe Sverdlovsk radiola was distinguished by the URZ logo (Ural Radio Plant) and a black scale, and at the top, near the fine-tuning indicator, against the red banner was a black silhouette of the monument to Y. M. Sverdlov.
I note that the Sverdlovsk Plant No. 626 NKV (URZ) produced these and subsequent models of radiol many times less than the Sarapul Radio Plant.
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