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: 45.597417
Longitude: -110.546583

Site Elevation:
1987.05 meters

Radiation Center Above Mean Sea Level (RCAMSL):
2020 meters

Height Above Average Terrain:
254 meters, based on 8 radials.
(rounded from 254.3 m)

HAAT Along Each Radial:

Azimuth HAAT
0589.96
45497.55
90-13.38
135-287.56
180357.18
225449.76
270-70.02
315510.93