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: 39.462778
Longitude: -121.581389

Site Elevation:
72.57 meters

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

Height Above Average Terrain:
-9.56 meters, based on 8 radials.

HAAT Along Each Radial:

Azimuth HAAT
0-69.37
45-78.55
90-139.97
1359.42
18053.89
22556.34
27051.12
31540.63