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Radio "Malchish" from the radio designer since 1973 produced the Experimental Experimental School Factory Chaika. The radio boy '' Boy '' is a set of radio components, assemblies and housing for assembling a portable direct gain radio receiver on transistors operating in the DV range. The radio designer is intended for beginners of radio amateurs who have initial knowledge of radio engineering. Initially, the receiver board was from getinax, there was no setting dial scale window, the variable capacitor had no stops and rotated around. There were inconsistencies in electrical and wiring diagrams. Because of all this, there were complaints to the designer, and many novice radio amateurs could not get the assembled receiver to work. In the 4th quarter of 1975, all defects were eliminated and the models began to be made from pressed cardboard. After that, the number of claims for the assembly has decreased dramatically. In this form, the modernized radio designer was produced before 1986.