The RFCR9134 from RF-CI is a RF & Microwave Circulator with Frequency 132 to 174 MHz, Average Power Forward 100 W, Average Power Reverse 20 W, Insertion Loss 0.8 to 1 dB, Isolation 15 to 16 dB. Tags: Drop-in Circulator. More details for RFCR9134 can be seen below.