HAAT Calculator & Elevation Finder

NAD83 Latitude:
- ' " N S *

NAD83 Longitude:
- ' " W E *

Radiation Center Height:
meters   *

- Above Mean Sea Level (RCAMSL)
- Above Ground Level (RCAGL)

Number of Radials:
8 radials (used for FM & LPFM) 12 radials (used for non fill-in translators) 36 radials 72 radials 360 radials

Terrain Database:
NED 1 (used in the US/Hawaii/Puerto Rico/Virgin Islands) NED 2 (used in Alaska) GLOBE 30 (used worldwide)
Legacy FCC30 terrain is not available through the FCC API. Use the FCC HAAT Calculator instead.

Station Class for ERP Check: (optional)
LP100 (minimum) LP100 (maximum) LP250 (proposed) D (Alaska & grandfathered) A (except PR/VI) A (3kW stations) B1 (except PR/VI) B (except PR/VI) C4 (proposed) C3 C2 C1 C0 C A (PR/VI only) B1 (PR/VI only) B (PR/VI only)