The WVQ-6100M-600BW01 from Wevercomm is a RF & Microwave Circulator with Frequency 5.8 to 6.4 GHz, Average Power Forward 10 W, Insertion Loss 0.4 dB, Isolation 20 dB, Operating Temperature -40 to 70 Degree C. Tags: Module with Connector, Coaxial Circulator. More details for WVQ-6100M-600BW01 can be seen below.