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: 41.522778
Longitude: -87.024444

Site Elevation:
259.01 meters

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

Height Above Average Terrain:
-221 meters, based on 8 radials.
(rounded from -221.31 m)

HAAT Along Each Radial:

Azimuth HAAT
0-201.16
45-232.36
90-238.63
135-227.38
180-229.56
225-231.67
270-211.98
315-197.72