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: 46.973139
Longitude: -123.137639

Site Elevation:
808.64 meters

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

Height Above Average Terrain:
641 meters, based on 8 radials.
(rounded from 641.11 m)

HAAT Along Each Radial:

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