HAAT Calculator & Elevation Finder

Calculate elevation and height above average terrain (HAAT) using the FCC's API.

NAD83 Latitude:
- ' " *

NAD83 Longitude:
- ' " *

Radiation Center Height:
meters   *

- Above Mean Sea Level (RCAMSL)
- Above Ground Level (RCAGL)

Number of Radials:

Terrain Database:

Legacy FCC30 terrain is not available through the FCC API. Use the FCC HAAT Calculator instead.

Station Class for ERP Check: (optional)

Decimal Coordinates:
Latitude: 39.937111
Longitude: -120.948556

Site Elevation:
1044.78 meters

Radiation Center Above Mean Sea Level (RCAMSL):
1057 meters

Height Above Average Terrain:
-347 meters, based on 8 radials.
(rounded from -346.79 m)

HAAT Along Each Radial:

Azimuth HAAT
0-144.65
45-417.88
90-228.55
135-418.41
180-641
225-487.28
270-274.52
315-162.03