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: 42.053361
Longitude: -87.675889

Site Elevation:
182.83 meters

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

Height Above Average Terrain:
36 meters, based on 8 radials.
(rounded from 35.72 m)

HAAT Along Each Radial:

Azimuth HAAT
042.79
4542.26
9042.17
13542.66
18034.69
22530.41
27024.46
31526.28