The RFLC101M20M40 from RF-Lambda is a Space Qualified Circulator with Frequency 200 to 400 MHz, Bandwidth 200 MHz, Average Power Forward 50 W, Insertion Loss 1.50 dB, Isolation 15 dB. Tags: Module with Connector, Coaxial Circulator. More details for RFLC101M20M40 can be seen below.