12.8 Kilowatts?
A local radio station, from my hometown, operates at 98.1 MHz and a power output of 100 Kilowatts. I can 'hear' its broadcasts for 100-120 miles. Operation at 1/8 of that power level (12.8 Kw) would NOT enable one to broadcast 300 Km. Perhaps if the receiver is equiped with a directional antenna, and the transmitter uses a directional antenna, that limit could be reached, but signal to noise ratio would be horrendous at the outer fringe of reception. That particular freq. band is not known for good propagation qualities. Mostly it is line of sight.
A local radio station, from my hometown, operates at 98.1 MHz and a power output of 100 Kilowatts. I can 'hear' its broadcasts for 100-120 miles. Operation at 1/8 of that power level (12.8 Kw) would NOT enable one to broadcast 300 Km. Perhaps if the receiver is equiped with a directional antenna, and the transmitter uses a directional antenna, that limit could be reached, but signal to noise ratio would be horrendous at the outer fringe of reception. That particular freq. band is not known for good propagation qualities. Mostly it is line of sight.