RAMSES Microwave Switches Radiall RAMSES Microwave Switches are an innovative system designed for constructing electromechanical coaxial RF switches with increased long term reliability. The unique internal construction makes the switches modular, which reduces the cost and lead time. The Radiall Modular System for Electromechanical Switches (RAMSES) is a patented concept that enables microwave coaxial switches to be produced with a typical operating life of 10 million cycles while suffering no decrease in contact resistance reliability over time.