The cantilever radiola of the 1st class "Riga-Mono" since 1964 was produced by the Riga Radio Plant named after
A.S. Popova.
Radiola is designed to receive broadcasting stations in the ranges: LW, CB, two HF subbands and in the VHF band.
The sensitivity in the ranges of CB, LW is about 30 μV, in the subbands of HF 60 μV, on VHF 5 μV, with an integrated magnetic antenna in the ranges of LW, CB 0.6 ... 1.2 mV / m, and in the position `` local reception
'' 0.3 ... 1.5 mV.
IF tract AM 465 kHz, FM path 6.5 MHz.
Selectivity in the LW, SV ranges of 65 dB.
Selectivity for the mirror channel in the ranges LW 66 dB, CB 46 dB, HF 20 dB, VHF 28 dB.
The AGC provides a change in the output signal of not more than 12 dB when the input signal changes by 40 dB.
The nominal output power of the amplifier is 2 watts, maximum 3.5 watts.
Sensitivity from 0.15 mV pickup.
The range of sound frequencies of reproduced speakers when receiving in the VHF range of 60 ... 12000 Hz.
Separate tone control for bass and treble.
The power consumed by the network when receiving 55 watts, when playing back a record of 65 watts.
A three-speed electronic control unit is installed in the radiol, with a micro-lift, semi-automatic switching on and automatic switching off.
Structurally, the radiol is located in the floor case, the speaker is located in the lower compartment of the case and consists of two front speakers 4GD-28 and two side speakers 1GD-28, in the upper part of the case there is an electronic control unit.
Dimensions of the radio are 640x355x555 mm.
Weight is 24 kg.
In 1966, the radiola was modernized, some of its components and parts were unified, the EPU III-EPU-20 was replaced by II-EPU-40, the stereo key was removed, and the scale design changed.
"Rigonda-Mono" was the first unified (USRL-1) model; in its design and layout, different factories of the country produced the same, but different radio designs with the names: `` VEF-Radio '', `` VEF-Rhapsody '',
Ural-1, Ural-2, Ural-3, Ural-5 and Ural-6.
,null,ru,null,null,null,null