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: 38.891778
Longitude: -77.131639

Site Elevation:
110.5 meters

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

Height Above Average Terrain:
184 meters, based on 8 radials.
(rounded from 184.04 m)

HAAT Along Each Radial:

Azimuth HAAT
0174.65
45176.43
90231.62
135227.38
180197.79
225163.11
270135.33
315165.97