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: 47.503722
Longitude: -121.975944

Site Elevation:
874.49 meters

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

Height Above Average Terrain:
710 meters, based on 8 radials.
(rounded from 710.04 m)

HAAT Along Each Radial:

Azimuth HAAT
0780.04
45746.15
90678.32
135367.24
180714.33
225787.87
270716.81
315889.54