The FMP146 from Smiths Interconnect is a RF & Microwave Circulator with Frequency 4 to 8 GHz, Average Power Forward 75 W, Insertion Loss 0.4 to 0.7 dB, Isolation 20 to 40 dB, Operating Temperature 0 to 55 Degree C. Tags: Coaxial Circulator. More details for FMP146 can be seen below.