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: 42.040028
Longitude: -88.677861

Site Elevation:
274.49 meters

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

Height Above Average Terrain:
41 meters, based on 8 radials.
(rounded from 40.58 m)

HAAT Along Each Radial:

Azimuth HAAT
044.91
4542.16
9024.94
13535.37
18041.14
22541.89
27040.51
31553.69