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: 40.181139
Longitude: -88.317556

Site Elevation:
260.09 meters

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

Height Above Average Terrain:
145 meters, based on 8 radials.
(rounded from 145.44 m)

HAAT Along Each Radial:

Azimuth HAAT
0145.59
45137.71
90144.37
135139.68
180149.45
225151.03
270150.51
315145.15