Profile: Radio Systems Information Ltd. specializes in tools and services for radio coverage surveys, particularly for the private mobile radio (PMR) sector including public utilities & emergency services. We are able to provide services ranging from complete system design and development, down to simple drive testing or telemetry link measurements. We provide Tetra antenna combiner, designed for use in a vehicle. It can operate up to 4 Tetra radios through a single antenna. It reduces network survey time by operating up to 4 different radio terminals simultaneously.