A system and a method for use in satellite communication are presented. The system comprising (a) one or more antenna units for receiving and transmitting electromagnetic radiation in selected frequency ranges, (b) a modem unit configured for modulating received input signals and modulating output electronic data to signals to be transmitted, (c) a processor unit connected to said one or more antenna units and to said modem unit. The processor unit comprises: antenna orientation optimizer module configured and operable for varying azimuth and elevation of signal transmission and reception the antenna units; and network registration module configured and operable for registering the system to a communication network. The registering comprising: selecting a free private communication channel provided by the network, generating a corresponding signal sequence for transmission to a hub. The registering module is configured to be responsive to appropriate notification signals in said private communication channel.