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: 39.428111
Longitude: -87.406000

Site Elevation:
148.03 meters

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

Height Above Average Terrain:
20 meters, based on 8 radials.
(rounded from 19.97 m)

HAAT Along Each Radial:

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