Abstract: Radios configured to operate in a satellite-based mobile user system and methods configured to support seamless beam and satellite handoff of such radios are disclosed. A radio may include a receiver, a transmitter, and one or more receiver-exciter in communication with the receiver and the transmitter. The receiver-exciter may include a bi-directional path configured to support radio communications and a receive-only path configured to receive signals on all frequencies utilized by a mobile user system. The radio may further include one or more waveform processor in communication with the receiver-exciter. The waveform processor may be configured to: digitize signals received on all frequencies utilized by the mobile user system; separate the signals into multiple channels; estimate quality measurements for the multiple channels; select a channel from the multiple channels based on the quality measurements; and establish a connection with the mobile user system using the selected channel.

Abstract: A signal extender and method for extending signals of a satellite is disclosed. The apparatus includes a terminal device interface, an antenna interface and a controller in communication with the terminal device interface and the antenna interface. The terminal device interface is configured for communicating with at least one terminal device. The antenna interface is configured for communicating with an antenna to facilitate communication with the satellite. Upon receiving a downlink signal from the satellite via the antenna interface, the controller processes the downlink signal to identify an intended terminal device among the at least one terminal device and transmits the downlink signal to the intended terminal device via the terminal device interface, and upon receiving an uplink signal from a particular terminal device via the terminal device interface, the controller transmits the uplink signal to the satellite via the antenna interface.

Abstract: An electronic system such as a modular telephone which includes one or more module slots used to add features. The module slots are configured to receive modules adding the software and hardware necessary to provide the desired features.

Abstract: An electronic system such as a modular telephone which includes one or more module slots used to add features. The module slots are configured to receive modules adding the software and hardware necessary to provide the desired features.