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: 35.170111
Longitude: -120.740694

Site Elevation:
3.37 meters

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

Height Above Average Terrain:
-65 meters, based on 8 radials.
(rounded from -64.87 m)

HAAT Along Each Radial:

Azimuth HAAT
0-155.98
45-63.99
90-95.95
13515.9
18018
22518
27013.7
315-268.6