The D13-M5865C01 from QUEST Microwave is a RF & Microwave Circulator with Frequency 5.8 to 6.5 GHz, Average Power Forward 30 W, Average Power Reverse 10 W, Insertion Loss 0.5 dB, Isolation 20 dB. Tags: Drop-in Circulator. More details for D13-M5865C01 can be seen below.