The RFC27W200G35 from RF-Lambda is a Space Qualified Circulator with Frequency 3 to 3.7 GHz, Bandwidth 700 MHz, Average Power 200 W, Average Power Forward 200 W( RF Power CW), Insertion Loss 0.35 to 0.4 dB. Tags: Module with Connector, Coaxial Circulator. More details for RFC27W200G35 can be seen below.