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: 40.599972
Longitude: -105.156361

Site Elevation:
1586.68 meters

Radiation Center Above Mean Sea Level (RCAMSL):
1613 meters

Height Above Average Terrain:
-107 meters, based on 8 radials.
(rounded from -107.22 m)

HAAT Along Each Radial:

Azimuth HAAT
0-21.53
4549.27
9091.72
13582.59
180-83.81
225-318.28
270-479.39
315-178.32