MMCX Cable Assemblies Amphenol RF MMCX Cable Assemblies provide reliable broadband performance with low reflection from DC to 6GHz. These 50Ω assemblies incorporate the industry-approved MMCX interface with a snap-on/quick disconnect interface. Amphenol RF MMCX Cable Assemblies are available in standard lengths ranging from 9' to 16.5'. These assemblies are often used in high-volume cellular, GPS, and wireless base station applications.