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: 39.956167
Longitude: -91.389583

Site Elevation:
182.53 meters

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

Height Above Average Terrain:
122.7 meters, based on 8 radials.

HAAT Along Each Radial:

Azimuth HAAT
0121.54
4583.02
9085.75
135105.47
180136.7
225149.43
270152.03
315147.69