Radiola network tube "Symphony".
Network tube radiosDomesticRadiola network lamp "Symphony" since 1964 was produced by the Riga plant named after. A.S. Popov. It is a high-end 17-tube AM-FM receiver assembled with a four-speed stereo EPU in a common housing. Radiola operates in the ranges of DV, SV, 4 sub-bands of the HF, VHF range and can receive stereo transmissions in the FM range using a prefix. Sensitivity with an external antenna in the FM range - 2 μV, AM - 20 μV, with a magnetic antenna in the DV, SV 1 mV / m. In the position, local reception in the Far East, SV 0.7 mV / m. IF AM 465 kHz. Selectivity at 10 kHz detuning - 76 dB. IF FM 6.5 MHz. IF bandwidth in the AM path at 12 kHz wide, 5 kHz narrow. In the FM path, the bandwidth is 140 kHz. AGC provides a change in the signal at the output of 6.5 dB, with a change at the input by 60 dB. The maximum power is 2x6 W, the reproducible frequency range is 40 ... 15000 Hz. Pickup sensitivity 180 mV. Power consumption 100/125 W. The model uses II-EPU-124-127 with semi-automatic switching on, auto switching off, microlift and speeds of 78, 45, 33, 16 rpm. Each speaker has 4 loudspeakers: HF 3GD-15, two MF 2GD-28 and LF 5GD-3. Frequency separation is performed by filters in the speaker. For better reproduction of low frequencies, a closed speaker with volumetric resonators is used. Radiola has 2 design options. In the first, the EPU is located next to the receiver, in the second above it. The dimensions of the radio of the 1st version are 1085x285x345 mm, the 2nd 660x320x360 mm, the weight is 28 and 25 kg. The speaker has dimensions of 450x1000x320 mm and a weight of 20 kg. The price of a radio with an AU is 333 rubles. The export radio "Rigonda-Symphony" was distinguished by inscriptions, frequencies of HF and VHF bands, EPU.
