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: 40.699194
Longitude: -89.601194

Site Elevation:
183.71 meters

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

Height Above Average Terrain:
21 meters, based on 8 radials.
(rounded from 20.55 m)

HAAT Along Each Radial:

Azimuth HAAT
0-10.23
4535.41
9012.92
13517.15
18037.08
22538.77
27010.85
31522.46