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: 48.775944
Longitude: -122.441556

Site Elevation:
74.09 meters

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

Height Above Average Terrain:
6 meters, based on 8 radials.
(rounded from 5.75 m)

HAAT Along Each Radial:

Azimuth HAAT
083.43
4566.3
90-325.23
135-20.46
180-110.5
225131.64
270119.3
315101.54