GMDSS: Element 7

1. A Inmarsat-FBB antennas are larger, but omni-directional, while Inmarsat-C antennas are smaller and parabolic, for aiming at the satellite.
2. B Inmarsat-FBB antennas are parabolic and smaller for higher gain, while Inmarsat-C antennas are larger but omni-directional.
3. C Inmarsat-C antennas are smaller, but omni-directional, while Inmarsat-FBB antennas are parabolic for lower gain.
4. D Inmarsat-FBB antennas are larger, but directional for higher gain, while Inmarsat-C antennas are smaller and non-parabolic, and do not require aiming at the satellite.

Tip: press A-D to answer