Superregenerative FM radio receiver.. FM Радиоприёмник. ФМ приемник.
Superregenerative FM radio receiver using russian germanium transistors, P410 / P411 and Elektron-M audio amplifier. The tuning coil has 4 turns enameled copper 1,2mm, internal diameter 10mm. The variable capacitor is from an old VEF-Sigma FM module.