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: 47.312583
Longitude: -123.372111

Site Elevation:
918.57 meters

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

Height Above Average Terrain:
709 meters, based on 8 radials.
(rounded from 709.37 m)

HAAT Along Each Radial:

Azimuth HAAT
0463.47
45716.51
90862.88
135852.01
180857.79
225831.48
270661.38
315429.46