The RFC26-600-541 from RF-Lambda is a Space Qualified Circulator with Frequency 5.26 to 5.56 GHz, Bandwidth 300 MHz, Average Power Forward 600 W, Insertion Loss 0.50 dB, Isolation 19 dB. Tags: Waveguide, Waveguide Circulator. More details for RFC26-600-541 can be seen below.