Beam Headings

Below - Click on the city nearest you to see a great circle map centered on that city.

Below - A great circle map centered on Mellish Reef.

All Great Circle maps generated by;

"Great Circle Maps for Windows" Ver 2.3 by Roger SM3GSJ
You can find this and updates at http://hem.passagen.se/sm3gsj

Reference co-ordinates for maps taken from "The Times Atlas of the World"