V. Gorchakov. Quadraphonic amplifier • R. Maysuls. Electronic watches on microcircuits • B. Tatarko. RC-generator with linear frequency reading • A. Abramov, A. Milekhin. Functional generator • B. Suetin. Digital frequency meter-multimeter • A. Koval, I. Kolodyazhny. Simple short-wave set-top box on transistors • N. Kravtsov. Car radio