- This program allows both great-circle (polar) and rectangular projections of the world. The great-circle map is center
ed on any specified latitude and longitude (the "home" location). The rectangular projection is shown with the home longitude in the middle of the screen.
- This program shows a polar-projection map of the northern part of Region 2 (Western hemisphere) with the patterns of all AM radio stations in Canada, the United States, Mexico and Cuba, on a specified frequency, with the map center
ed on a user-specified "home" location.