External Antennas

Preferred Antenna Location

The antenna must be able to “see” the entire sky from approximately 8 degrees above the horizon. Nearby tall buildings or similar structures, heavily leafed trees and mountains can all degrade performance as they block the signal between the antenna and the satellites. Having a completely open view of the sky plays a very important role in maximising performance, as the Iridium satellites cross the sky from North horizon to South horizon during a connected call.

Vehicle Antenna Installation
The ideal position for any vehicle-mounted application is to capitalise on the greatest ground plane from the surface of the vehicle.

Marine Antenna Installation
The antenna must be installed without obstruction of other instruments or structures. The antenna must not be positioned within range of radar equipment or other RF interference.