One way to quantitatively evaluate power versus probability of communicating is to use the VOACAP Online tool: http://www.voacap.com/prediction.html The tool includes transmitter power at several steps, 1, 5, 10, 50, 100, etc. Set the transmitter at your location and the receiver about 1300 miles away, optimal first hop for a 20 Degree radiation elevation angle. Then keeping all parameters constant, run a few prediction at various power levels and evaluate the area of the 90-100% probability on the resulting prediction plots.
The resulting plot includes 10 lines, representing the 10% probability steps. John KN5L ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
