Software-defined commercial radio systems (SDRs) (COTS) are traditionally used for military RADAR and communications applications due to their high performance and design flexibility. The latest SDR products offer SoC solutions with integrated I / O, ARM processors and large FPGAs that include intellectual property (IP) for access, routing and digital data processing. Combining these attributes with superior signal integrity, phase coherent sampling and multi-channel transceivers, the COTS SDR system is the ideal choice for your 5G development platform. This article is designed to introduce a new user to software-defined radio in the COTS multi-purpose platform, which can reduce the time to market your 5G products.