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Antenna Height above Average Terrain (HAAT) Calculator

Values for antenna height above average terrain (commonly abbreviated "HAAT") can be calculated using this form.  Two terrain databases are available here: the FCC's legacy 30-second terrain database, and the GLOBE 1 km Base Elevation database from the National Geophysical Data Center.  Using GLOBE, HAAT values can be calculated for any location on Earth, given coordinates and an antenna radiation center height above mean sea level (usually correlating to the physical center of the antenna). 
More about HAAT below the form.

Information about radio broadcast radio stations is available at the Audio Division on the FCC's website, and at Broadcast Radio Links.  Information about television broadcast stations is available at the Video Division

FCC > Media Bureau > Audio Division and Video Division

Updated: February 5, 2015

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