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: 41.898917
Longitude: -87.623111

Site Elevation:
179.48 meters

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

Height Above Average Terrain:
427 meters, based on 8 radials.
(rounded from 426.57 m)

HAAT Along Each Radial:

Azimuth HAAT
0430.25
45430.4
90430.18
135430.41
180424.14
225424.02
270419.79
315423.35