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: 38.936222
Longitude: -77.092194

Site Elevation:
111.78 meters

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

Height Above Average Terrain:
156 meters, based on 8 radials.
(rounded from 155.95 m)

HAAT Along Each Radial:

Azimuth HAAT
0135.38
45141.36
90187.63
135199.41
180172.41
225131.24
270135.4
315144.73