The WVQ-2100M-600BW01 from Wevercomm is a RF & Microwave Circulator with Frequency 1.8 to 2.4 GHz, Average Power Forward 100 W, Insertion Loss 0.5 dB, Isolation 18 dB, Operating Temperature -40 to 70 Degree C. Tags: Module with Connector, Coaxial Circulator. More details for WVQ-2100M-600BW01 can be seen below.