The RJ2-1804-01 from Talent Microwave Inc is a Coaxial Rotary Joint with Frequency DC to 18 GHz / DC to 4 GHz, Average Power 200 W, Peak Power 5 kW, Insertion Loss 0.05 to 1.5 dB, Operating Temperature -40 to 70 Degree C. More details for RJ2-1804-01 can be seen below.