The 128-way system is the RF Interface to be used on a payload with multiple uplink and downlink ports. A Splitter and Combiner Unit (SCU) will be necessary on the uplink path and a Combiner Unit (CU) on the downlink path. The 128-way is a modular assortment of RF power splitters and combiners required to operate both in ambient and thermal vacuum conditions. The RF Test Interface’s external connectors and interfaces are precision 2.92mm/3.5mm (female). Other connector interfaces are available upon request.