FM radio receiver on transistor BF979

A simple radio receiver for receiving a commercial FM. The receiver itself is made on the BF979 transistor. The coil, and also the antenna, are made of a copper wire with a diameter of 2 mm in the form of a circle, about 7 cm in diameter. FM bases are received on such an antenna. The diameter can be reduced, and the frequency will rise. The variable capacitor is Chinese, two terminals, which have a capacity of about 1 to 20 pF. The capacitor S3 can be used to change the mode. The operating mode of the BF979 transistor is carried out on the resistor R2. It is necessary to achieve confident reception with a rotary rotor. There is an audio frequency amplifier on transistors T2, T3. The sound on my amplifier from the computer is quite quiet, it is necessary to achieve a normal level

One turn of the coil is both an antenna and a receiving coil