The CIR01FXP-7528 from ETL Systems is a RF & Microwave Circulator with Frequency 626 to 698 MHz, Average Power Forward 100 W, Average Power Reverse 100 W, Insertion Loss 0.3 dB, Isolation 23 dB. Tags: Module with Connector, Coaxial Circulator. More details for CIR01FXP-7528 can be seen below.