The children's radio design set "Start" was produced since 1970. It is a set of radio components (resistors, capacitors, diodes, transistors, HF transformer, variable capacitor, cartridge with signal lamp, contact and headphones), which allows quickly and safely, without soldering, to mount various simple radio devices on transistors. The set of the designer has a mounting plate made of organic glass, a screwdriver, a socket wrench, tweezers, nuts with screws and mounting brackets with which the elements are assembled. To the instructions for use is attached 12 principal and wiring diagrams. Using the schemes, young radio amateurs will be able to assemble a detector receiver, receivers on one, two, three and four transistors, two and three transistor amplifiers of the low frequency, the simplest sound generator, a sound generator for studying Morse code, a sensor of light pulses, an amplifier to an electrodynamic microphone checks of transistors and a device for connecting the assembled receivers to home radio receivers for listening to radio stations through an external loudspeaker. You can use any batteries and rechargeable batteries with voltage from 4.5 to 9 V as power sources.