The WVQ-770M-20BW01 from Wevercomm is a RF & Microwave Circulator with Frequency 760 to 780 MHz, Average Power Forward 250 W, Insertion Loss 0.5 dB, Isolation 50 dB, Operating Temperature -30 to 60 Degree C. Tags: Module with Connector, Coaxial Circulator. More details for WVQ-770M-20BW01 can be seen below.