Antenna Height Above Average Terrain (HAAT) Calculator

You can determine antenna height above average terrain (HAAT) by utilizing this form. It offers access to two terrain databases: the FCC’s traditional 30-second terrain database and the GLOBE 1 km Base Elevation database from the National Geophysical Data Center. With GLOBE, you can compute HAAT values for any location on Earth by providing coordinates and specifying the antenna radiation center height above mean sea level, which typically aligns with the physical center of the antenna. Additional information about HAAT is provided below the form for reference.