This micro FM transmitter or wireless FM microphone makes use of a ceramic capsule as a microphone or even a medium impedance magnetic microphone. The transistor can be the BF494 and the coil consists of 2 + 2 turns of wire 22 to 26 in the form of 1 cm without core. A 10 to 15 cm antenna can be connected to the transistor collector and all capacitors, except C1, must be ceramic. The circuit is from a 1993 Italian magazine.
