SU-3A 1988
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Since 1988, the SU-3 radio designer has been producing the Promsvyaz Ufa Experimental Plant. The kit is a technical tool for acquiring skills in the assembly, installation and tuning of radio equipment by secondary amateur radio amateurs and high school students. When properly assembled and tuned, a high-quality stereo amplifier for reproducing mono and stereo programs can be made from a set. The kit was produced in two types: "SU-3" without speakers and "SU-ZA," with two 10GD-36K-40 speakers. The amplifier has the following parameters: rated output power 2x6 W; maximum 2x15 W; operating frequency range 20 ... 20,000 Hz; nonlinear distortion coefficient 1%. The price of the first set is 35 rubles 50 kopecks, the second 56 rubles 50 kopecks.
Documentation:
Information from collection of Valery Khartchenko