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: 47.138694
Longitude: -123.140972

Site Elevation:
365.06 meters

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

Height Above Average Terrain:
-103 meters, based on 8 radials.
(rounded from -102.82 m)

HAAT Along Each Radial:

Azimuth HAAT
0-73.09
45-44.11
90-28.64
135-63.46
180-226.58
225-130.21
270-127.03
315-129.46