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: 35.549667
Longitude: -121.076000

Site Elevation:
127.77 meters

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

Height Above Average Terrain:
4 meters, based on 8 radials.
(rounded from 4.1 m)

HAAT Along Each Radial:

Azimuth HAAT
0-272.21
45-224.75
90-109.6
13589.62
180140
225140
270140
315129.74