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: 41.497889
Longitude: -71.528111

Site Elevation:
50.42 meters

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

Height Above Average Terrain:
127 meters, based on 8 radials.
(rounded from 126.81 m)

HAAT Along Each Radial:

Azimuth HAAT
093.07
45149.42
90151.15
135156.25
180140.5
225132.19
270124.93
31566.93