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: 39.723639
Longitude: -90.685944

Site Elevation:
189.2 meters

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

Height Above Average Terrain:
147 meters, based on 8 radials.
(rounded from 147 m)

HAAT Along Each Radial:

Azimuth HAAT
0154.3
45183.42
90166.66
135181.98
180134.97
225111.64
270105.72
315137.33