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: 41.974833
Longitude: -71.628667

Site Elevation:
99.51 meters

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

Height Above Average Terrain:
7 meters, based on 8 radials.
(rounded from 6.71 m)

HAAT Along Each Radial:

Azimuth HAAT
028.4
4548.16
9041.79
13540.17
180-3.43
225-45.68
270-20
315-35.71