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: 47.015917
Longitude: -122.917083

Site Elevation:
125.11 meters

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

Height Above Average Terrain:
72 meters, based on 8 radials.
(rounded from 71.6 m)

HAAT Along Each Radial:

Azimuth HAAT
0140.86
4599.1
9089.94
13562
18081.88
22587.13
270-100.09
315111.96