HEATKEYS

The Great Circle Mapper displays maps and computes distances along a geodesic path. It includes an extensive, searchable database of airports and other locations.

Use Great Circle Mapper to calculate the distance and flight duration between all airports worldwide and draw the flight route on a map.

Callsign database, Solar Resource Page, FT2000, FT920 Resource Page, FT100 Resource Page, amateur radio links, and more.

GPS Visualizer is a free utility that creates customizable maps and profiles from GPS data (tracklogs & waypoints), addresses, or coordinates.

filter design software, filter design program, electrical filter design

FW4 DW4 HTML

This application is a set of map drawing tools. One tool shows the shortest distance between two points, and the other tool shows the area within a given distance of a point.

DX Zone directory with 15000 Amateur Radio links, about Ham-Radio radio scanning, cb radio and shortwave listening, antenna homebrew projects and a complete radio software collection. Include a free classified ads, ham radio reviews and operators di...