A simple FM transmitter sounds awful without producing low and high audio frequencies. Also its radio frequency wanders all over the place.
My FM transmitter uses the oscillator trimmer capacitor to select a vacant radio frequency and the trimmer capacitor on the RF amplifier is broadly peaked for maximum output power. My coils made with thick enamelled wire are like this:
My FM transmitter uses the oscillator trimmer capacitor to select a vacant radio frequency and the trimmer capacitor on the RF amplifier is broadly peaked for maximum output power. My coils made with thick enamelled wire are like this: