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: 38.589806
Longitude: -90.347833

Site Elevation:
169.11 meters

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

Height Above Average Terrain:
47 meters, based on 8 radials.
(rounded from 46.64 m)

HAAT Along Each Radial:

Azimuth HAAT
029.78
4555.78
9061.54
13570.65
18045.44
22544.74
27030.76
31534.41