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: 43.411444
Longitude: -71.975361

Site Elevation:
409.59 meters

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

Height Above Average Terrain:
91 meters, based on 8 radials.
(rounded from 91.06 m)

HAAT Along Each Radial:

Azimuth HAAT
022.98
45150.57
90143.29
135138.26
180117.06
22543.85
27067.62
31544.87