This powerful FM transmitter with FET can reach more than 1 km in favorable conditions. L1 consists of 7 turns, with a socket on the third turn, of 28 or 26 wire in the form with an adjustable 0.8 cm ferrite core and L2 for 3 turns on L1. The capacitors must be ceramic, and the supply must be made with voltages from 4.5 to 12 V.
