The RFCR2158 from RF-CI is a RF & Microwave Circulator with Frequency 205 to 230 MHz, Average Power Forward 200 W, Average Power Reverse 200 W, Peak Power 1000 W, Insertion Loss 0.50 to 0.70 dB. Tags: Drop-in Circulator. More details for RFCR2158 can be seen below.