[dfox]

On the pictures of the droneship the quite distinctive Inmarsat BGAN (which is in essence 3G bounced of geostationary satellite) antenna pod is plainly visible.

Edit: inside the pod is fairly high-gain directional antenna mounted on motorized positioner, but it is designed to track the satellite from slow (ie. ship) or predictably moving (ie. truck) platforms and certainly cannot cope with vibrations from the landing reliably. Man-portable BGAN terminals usually have fixed antenna and officially require quite lengthly positioning process (on the other hand it will work for some value of "work" when you just throw it into car trunk and park with trunk vaguely pointing to south, but you will be lucky to get reliable phone connection, not to mention video stream, in that case).