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: 48.752306
Longitude: -122.478222

Site Elevation:
22.46 meters

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

Height Above Average Terrain:
-39 meters, based on 8 radials.
(rounded from -38.98 m)

HAAT Along Each Radial:

Azimuth HAAT
036.99
454.86
90-222.3
135-255.15
180-62
22558.38
27075.99
31551.42