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: 39.806806
Longitude: -121.627472

Site Elevation:
683.85 meters

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

Height Above Average Terrain:
177 meters, based on 8 radials.
(rounded from 177.33 m)

HAAT Along Each Radial:

Azimuth HAAT
010.6
45-166.66
90-37.54
135158.13
180372.91
225496.98
270411.52
315172.67