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: 45.656278
Longitude: -122.385556

Site Elevation:
231.73 meters

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

Height Above Average Terrain:
37 meters, based on 8 radials.
(rounded from 36.64 m)

HAAT Along Each Radial:

Azimuth HAAT
0-127.38
45-414.43
90-55.19
135122.41
180214.27
225213.02
270186.36
315154.06