Radiola "Topaz" in 1958 was developed by the Riga State Electrotechnical Plant VEF.
Radiola has a two-channel sound power amplifier (separately for bass and treble), which is loaded with acoustics, consisting of seven speakers located in three directions.
On the front are two low-frequency loudspeakers 5GD-10, mid-frequency 3GD-7 and two high-frequency VGD-1.
On the sides of each acoustic compartment are another VGD-1.
The top-class radiola is built on 15 lamps, the receiver has auto-tuning.
The control keys are located in two rows, closer to the scale: the keys to switch ranges, turn on / off the power, turn on the player.
Further away from the dial are tone keys and auto-tuning keys.
Radiola consists of individual units and is equipped with a remote control.
Under the radio chassis is a built-in cabinet for storing phonograph records.
The radio has a built-in magnetic antenna, as well as a VHF dipole.
Frequency ranges: LW 150 ... 415 kHz, CB 520 ... 1600 kHz, KB1 - 11.49 ... 12.14 MHz, KB2 - 9.36 ... 9.87 MHz, KB3 - 6.94
... 7.35 MHz, KB4 - 5.89 ... 6.3 MHz, European VHF - 87.5 ... 100 MHz.
Nominal output power of the LF channel 4 W, HF channel 3 W.
The band of reproduced audio frequencies in the ranges of LW, NE, HF from 40 to 6500 Hz, in the VHF range from 40 to 15000 Hz, in the playback mode of a recording of 50 ... 10000 Hz.
Power Consumption 130 (140) W.
The mass of the radio is 80 kg.
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