The RFLC601G08G12 from RF-Lambda is a Space Qualified Circulator with Frequency 8 to 12 GHz, Bandwidth 4000 MHz, Average Power Forward 10 W, Insertion Loss 0.5 to 0.6 dB, Isolation 18 to 18.5 dB. Tags: Module with Connector, Coaxial Circulator. More details for RFLC601G08G12 can be seen below.