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: 41.804472
Longitude: -88.012278

Site Elevation:
228.12 meters

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

Height Above Average Terrain:
42 meters, based on 8 radials.
(rounded from 42.43 m)

HAAT Along Each Radial:

Azimuth HAAT
037.62
4552.72
9054.28
13544.83
18037.16
22545.64
27037.46
31529.74