> > >On Aug 30, 2007, at 12:35 AM, ldgelectronics wrote: > >> As a quick and dirty method, the radio horizon is: >> >> Distance (in miles) = Square Root of (2 * height in feet). >
This equation is ok, but for a perfect spheer. Is a good place to start. Here in FL where max altitude is about 330 ft ASL it works pretty well although the lower the antenna the worse the actual coverage results. We have plenty of repeaters at 200 ft that have noticably better coverage than 20 miles with a mobile. Also one has to take in account of the user's station. The equation is to the horizon so a user with height over the horizon can also increase coverage. 73, ron, n9ee/r Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome.
