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: 45.520806
Longitude: -122.810028

Site Elevation:
70.17 meters

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

Height Above Average Terrain:
-7 meters, based on 8 radials.
(rounded from -7.17 m)

HAAT Along Each Radial:

Azimuth HAAT
0-32.6
457.39
90-42.65
135-29.31
1802.22
22516.68
27023.69
315-2.76