Just add the audio source to the end of the loose capacitor. This little gizmo should give 0.5W RF power. That's a lot. With half a watt maybe you'll cover 1km. The output is almost distortionless so no need for fancy harmonic filterings. Need help on the transistor though. So i basically need a transistor with transition frequency of at least 100Mhz (150Mhz best) and power rating of at least 2W. Ah and the gain should be 100 Any suggestions?
