Inmarsat Antennas

Each Inmarsat Antenna varies in size, weight, connectivity capability and speeds.

High Gain Antenna, Class 6 SBB

A high-gain antenna (HGA) is an antenna with a focused, narrow radiowave beam width. This narrow beam width allows more precise targeting of the radio signal – also known as a directional antenna.

  • Size: Large
  • Standard IP Speed: Up to 432 kbps
  • Streaming IP Speed: 8/16/32/64/128 kbps
  • Voice: 4 kbps
  • SMS: Yes
  • ISDN Voice: (3.1 kHz Audio, ISDN RDI, ISDN, UDI
Intermediate Gain Antenna, Class 7 SBB
  • Size: Medium
  • Standard IP Speed: Up to 332 kbps
  • Streaming IP Speed: 8/16/32/64/128 kbps
  • Voice: 4 kbps
  • SMS: Yes
Low Gain Antenna, Class 15 SBB

A low-gain antenna (LGA) is an antenna with a broad radiowave beam width. This very wide beam allows for a more reliable signal that is best used in mountainous regions, where the signal will propagate reasonably well regardless of terrain. The mountains become the equivalent of rocks in a stream, surrounded by the flowing waves. Low gain antennas are often used in spacecraft as a backup to the high-gain antenna, which transmits a much narrower beam and is therefore susceptible to loss of signal.

  • Size: Small
  • Standard IP Speed: Up to 200 kbps
  • Streaming IP Speed: 8/16 kbps
  • Voice: 4 kbps
  • SMS: Yes