The 28400 from Amphenol RF is panel mount MHV connector, receptacle with female socket, non-constant impedance and solder tab contact / solder shield termination. This connector has front side nut and bayonet lock. The 28400 has beryllium copper center contact with silver plating, polytetrafluoroethylene (PTFE) dielectric and brass body with nickel finish. Operating temperature range is from -65°C to 165°C.