BNC Male to UHF SO239 Female Connector. BNC product are that one kind push the locking type joining, it has small, light electric performaance a fine characteristic easy to use, suitable for joining the coaxial cable of the radio frequency to use in the radio equipment and radio equipment and radio frequency loop of the electron tube instrument. RF connectors are typically used with coaxial cables and are designed to maintain the shielding that the coaxial design offers.