This paper presents a novel design of a satellite S-band Communication Module (S-COMM). The module uses multiple integrated RF transceivers with external I/Q signaling, which allow the optimization of modulation and pre-distortion correction of the transmitted signal in order to obtain a clearer spectrum. The proposed implementation also enables the use of highly efficient switch mode power amplifiers. In addition, a range extension board is used to boost the RF output power up to 5 W, furthermore the communication range can be extended with the use of a newly designed high gain antenna. The system can be optimized for the specified requirements via in-orbit software upgrades supported by the S-COMM, which allow reconfiguration of modulation schemes and error coding algorithms. The S-COMM is compliant with the recommendations of the Consultative Committee for Space Data Systems (CCSDS) standard. In order to communicate with the S-COMM two separate interfaces are provided: the hot-redundant CAN interface and the LVDS interface; whereby the CAN interface is used for commands and telemetry, whilst the LVDS is used for high data rate transfers from and to the On Board Computer (OBC) subsystem.