This service provides calculation of surface propagation of radio waves depending on frequency, emitted power and antenna heights.
The data here may change or be removed whenever I feel like it, so if your preferred data has disappeared it's your fault for not downloading and saving it.
The KMZ files are intended to be used in Google Earth.
Be aware that not all files found here of radio sites with patterns depicts actual sites, just theoretical sites. Other factors may apply as well rendering the patterns inaccurate.
Results may be found in public folder. The files are in folders for different areas of the map, first for every 10 degrees and then sub-folder for every degree. Name is based on frequency and coordinates. Be aware that it can take several minutes before a request is processed.
Hint: To get the coordinates right, use Google Earth, put a placemarker, then copy the Latitude and Longitude values into the web form. Make sure that you have Google Earth set to English language first or you may have to edit to W/E/N/S for the direction.