Radiall 50 Ohm N Series RF Coaxial Termination Connectors. 50 Ohm N series RF coaxial male termination connectors with a nickel plated brass body, gold plated centre contact and PTFE dielectric. These N series male RF coax terminators have the following ratings: Stock number ; 263-2750 263-2750 : DC 4 GHz, 1W Stock number ; 263-2766 263-2766 : DC 12 GHz, 1W