The RFC216W500G1075 from RF-Lambda is a Space Qualified Circulator with Frequency 900 MHz to 1.25 GHz, Bandwidth 350 MHz, Average Power Forward 500 W, Peak Power 4 kW, Insertion Loss 0.50 dB. Tags: Module with Connector, Coaxial Circulator. More details for RFC216W500G1075 can be seen below.