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: 47.544000
Longitude: -122.109278

Site Elevation:
435.61 meters

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

Height Above Average Terrain:
393.86 meters, based on 8 radials.

HAAT Along Each Radial:

Azimuth HAAT
0468.34
45408.91
90317.33
135236.89
180351.81
225449.3
270455.73
315462.58