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: 37.331444
Longitude: -121.886444

Site Elevation:
28.23 meters

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

Height Above Average Terrain:
-55 meters, based on 8 radials.
(rounded from -54.61 m)

HAAT Along Each Radial:

Azimuth HAAT
08.56
45-226.77
90-177.24
1350.74
180-52.06
225-43.65
2704.4
31549.13