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: 42.215417
Longitude: -121.798611

Site Elevation:
1367.71 meters

Radiation Center Above Mean Sea Level (RCAMSL):
1439 meters

Height Above Average Terrain:
123 meters, based on 8 radials.
(rounded from 123.3 m)

HAAT Along Each Radial:

Azimuth HAAT
092.12
4544.35
9074.32
135188.85
180190.01
225151.42
27078.55
315166.76