The RFCR9131N from RF-CI is a RF & Microwave Circulator with Frequency 88 to 103 MHz, Average Power Forward 200 W, Average Power Reverse 100 W, Insertion Loss 0.80 to 1 dB, Isolation 17 to 19 dB. Tags: Coaxial Circulator. More details for RFCR9131N can be seen below.