Radio reception • M. Firsov. Shortwave receiver • V. Kokachev. KV converters • Sound reproduction • I. Topilin. Small-sized stereo amplifier for amateur radio complex • D, Ataev. Universal two-channel pre-amplifier LF • G. Tyurin. Final amplifier LF • A. Dolnik. Features of the loudspeaker head in acoustic design • B. Novozhilov. Cascode input stage in a tape amplifier • Broadcasting • Yu. Malyshev. Simple three-program loudspeaker • Electric music • B. Shushurin. Amplifier LF for the ensemble of electric musical instruments • Measuring equipment • V. Kovalev. Oscillating frequency generator • N. Zimin. Q-factor meter • Electronics in a car • V. Lomanovich, A. Kuzminsky. Thyristor start-up of heaters.