The N-CUBE comes as a unique solution that combines GNSS signal processing and RF front-ends. It implements the latest state-of-the-art positioning and synchronization techniques, to reach top class of performances for Real-Time Precise Onboard Orbit Determination (P2OD) and accurate time synchronization. N-CUBE inherits from more than 10 years of Syrlinks’ experience in the GNSS domain and has been jointly designed with CNES (The French Space Agency). The receiver can synchronize from different GNSS systems including GPS, GALILEO and BEIDOU. Its synchronization process is GALILEO autonomous with no need of GPS pre-synchronization. In terms of positioning, N-CUBE provides accuracy better than 0.5 meters, thanks to a unique algorithm (referenced as “Bolero”) developed by CNES. N-CUBE embeds two parallel GNSS transmitters (featuring RF amplifiers), one in L-Band and one in S-Band. This authorizes to implement GNSS signal re-transmission as required for instance for LEO PNT service applications. Modulation scheme is based on various flavors of BOC(2,1) implementations. Its Software-Defined-Radio (SDR) core architecture brings maximum flexibility and enables implementation of specific software-based processing to address a wide range of applications.The product design belongs to the Syrlinks “New Space III” product category. This Product Assurance subclass perfectly meets the requirements of Nano/CubeSat missions, targeting a typical 2/5-year lifetime at Low Earth Orbit with a maximum Total Ionized radiation Dose of 12 krad.