功能:
real time sun position plotter shows regions of daylight, and greyline propagation
preloaded names and positions of sailmail and winlink stations and over 300 major cities
great circle route plots, course and distance measurements
split screen map display makes entering positions simpler and faster
map cursor position is shown as both latitude/longitude and maidenhead qth locator
improved prediction algorithm
可以免费用30天,点这里下载