B. Avdeev, S. Lvovsky. 3.5MHz Fox Hunt Competition Receiver • B. Antoshchuk. Radio station at 28-29.7 MHz • V. Belov. Teaching machine • V. Eskin. Tester-calibrator • V, Filippov. Radio Center RTU-50 • M. Titenko. Pocket flash • M. Ivlev. Electronic vibrator for electric guitar L. Kulichenko. Semiconductor voltage stabilizers • V. Yezhov, L. Kulichenko. Photo head on semiconductor devices • To help the amateur radio designer • Reference department