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: 36.552417
Longitude: -121.789167

Site Elevation:
358.8 meters

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

Height Above Average Terrain:
181 meters, based on 8 radials.
(rounded from 181.07 m)

HAAT Along Each Radial:

Azimuth HAAT
0298.92
45280.83
9040.08
13550.98
180-56.38
225136.56
270311.23
315386.32