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Radio constructor "Start-7218" (Functional generator) from I quarter of 1988 was produced by the Kamenets-Podolsk plant Elektropribor. RK is intended for children of senior school age, as well as for radio amateurs of any qualification. Working with a radio designer does not require special training and allows you to master the skills of designing and prototyping radio devices. RK allows you to assemble a simple functional generator on a printed circuit board, which generates sine, triangular and rectangular oscillations in a wide frequency range, which makes it possible to use it when checking and adjusting electronic devices. When using a generator in conjunction with an oscilloscope, it is possible to remove the amplitude-frequency and dynamic characteristics of the measured devices. The generator can be used to check the dynamic state of logical elements of digital devices. Installation of elements is carried out on the printed circuit board. Main characteristics: Operating range 20 ... 135000 Hz. The number of subranges is 4. The output voltage at a sinusoidal waveform is 0.3 V, triangular and rectangular 1.8 V. The harmonic coefficient of the sinusoidal voltage is 6%. Output resistance 600 ohms. Power supply 9 V. Current consumption 60 mA. FG dimensions are 167x92x55 mm. Weight 200 gr.