The PE83CR1030 from Pasternack Enterprises Inc is a RF & Microwave Circulator with Frequency 2 to 4 GHz, Average Power Forward 100 W, Average Power Reverse 100 W, Insertion Loss 0.65 dB, Isolation 18 dB. Tags: Module with Connectors, Coaxial Circulator. More details for PE83CR1030 can be seen below.