On Mon,2/23/2015 12:10 AM, Edward R Cole wrote:
Most propagation is ground wave which does not extend as far as HF. Best propagation is in winter and at night when a little sky wave is seen.
A clarification. The strength of ground wave propagation increases with decreasing frequency. The FCC Rules for the AM broadcast band include a family of graphs for ground wave in groups of a few channels to cover the band. Ground wave distances on the low end of the band are MUCH greater than on the high end.
73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
