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: 41.064000
Longitude: -123.685889

Site Elevation:
104.73 meters

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

Height Above Average Terrain:
-485 meters, based on 8 radials.
(rounded from -484.96 m)

HAAT Along Each Radial:

Azimuth HAAT
0-110.59
45-508.53
90-890.11
135-312.08
180-611.04
225-617.02
270-496.91
315-333.41