Let’s Tesselate: Hexagons For Tile Grid Maps. By Danny DeBelius | May 11, A hexagon tile grid, square tile grid and geographic choropleth map. Maps by Danny DeBelius and Alyson Hurt. This calculator by David K2DSL will show your grid square on a map. Stephen P. Morse has a web utility for converting addresses to latitude/longitude using a variety of different databases. Maidenhead Grid Locator Converter on the AMSAT web page. U.S.A. Amateur Radio band plan with common country decoracoes.me KB U.S.A. Amateur Grid Square Map.