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The radio designer "Kamerton" (Dual-channel equalizer) from I quarter of 1987 was produced by Kharkov plant Etalon. The radio constructor is intended for technical creativity and is a complete set of parts and radio elements that allow you to assemble a graphic two-channel equalizer. The main technical characteristics of the assembled equalizer: Frequency range with uneven frequency response ± 1.5 dB (controls in the middle position) 20 ... 20000 Hz. Harmonic coefficient is not more than 0.3%. The intermodulation distortion factor is not more than 0.2%. Signal to noise ratio of at least 60 dB. Frequency control frequency response - 63, 160, 400, 1000, 2500, 6300 and 16000 Hz. The limits of the frequency response at each of the regulation frequency ± 12 dB. Power consumption 10 watts. The dimensions of the equalizer are 380x285x120 mm. Its weight is 5 kg. Price 110 rubles.