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: 42.588417
Longitude: -71.790056

Site Elevation:
150.29 meters

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

Height Above Average Terrain:
-42 meters, based on 8 radials.
(rounded from -42.06 m)

HAAT Along Each Radial:

Azimuth HAAT
0-50.68
4538.42
9054.14
13550.26
180-26.64
225-101.88
270-124.76
315-175.33