Shapefiles: pick the .shp with its .dbf and .prj together, or a zipped shapefile. Click a feature to see attributes or place a site on it; in placement mode, clicks snap to points.
3 · Defaults & Units
Applied to new sites. Unit choices apply everywhere. Each site can be edited individually below.
4 · Place Sites
Click a button, then click the map. Drag pins to move. A new repeater links to the selected site. Right-click the map to see a terrain profile from the selected site to that point. Esc cancels.
5 · Sites
6 · Radio Line of Sight
Clutter is added to terrain between the antenna and the aircraft (trees, buildings). k = 1.333 is standard atmosphere refraction.
7 · Project
Plans auto-save in this browser. Saved plans include reference layers. KMZ includes sites, range rings, links and coverage rasters for Google Earth.
Terrain: SRTM-based elevation (AWS Terrain Tiles, ~30 m). Bare-earth model — buildings and vegetation are not included except via the clutter allowance. Planning aid only; verify on site.