UHF Coaxial Connectors Amphenol RF Ultra High Frequency (UHF) Coaxial Connectors are general-purpose units developed for use in low-frequency systems from 0.6MHz to 300MHz. Amphenol RF UHF connectors feature a large-size threaded coupling with a rugged design and offer non-demanding specifications. Typical applications include wireless, low frequency, antennas, cable assemblies, public address systems, and CB radios.