Schematic available at [ Ссылка ]
Variable frequency FM Transmitter using an MRF101 MOSFET
Running on 24V @ 500mA.
Outputs 100W @ 88MHz (70Vrms / 50 Ohms) using a DIY 1/4 wave ground plane antenna
Field tested using the homemade GP antenna on a pole 10' above earth in my yard with clear reception at 1/2 mile in a city and surrounded by apartment buildings.
This experimental transmission was for testing purposes only and was conducted in a narrow unoccupied band between 87 and 89MHz to avoid interference.
With a higher antenna and open terrain the signal will easily reach the horizon, where permitted by local laws.
