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: 41.613972
Longitude: -70.598361

Site Elevation:
27.09 meters

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

Height Above Average Terrain:
74 meters, based on 8 radials.
(rounded from 73.98 m)

HAAT Along Each Radial:

Azimuth HAAT
066.4
4546.67
9071.53
13581.53
18080.02
22581.36
27083.42
31580.89