The RFLC-601-6 from RF-Lambda is a Space Qualified Circulator with Frequency 12 to 18 GHz, Bandwidth 6000 MHz, Average Power Forward 10 W, Insertion Loss 0.5 to 0.6 dB, Isolation 15 to 16 dB. Tags: Module with Connector, Coaxial Circulator. More details for RFLC-601-6 can be seen below.