The UIYBCC5049A from UIY Inc. is a RF & Microwave Circulator with Frequency 135 MHz to 2.7 GHz, Average Power Forward 200 W, Average Power Reverse 200 W, Insertion Loss 0.7 dB, Isolation 16 dB. Tags: Coaxial Circulator. More details for UIYBCC5049A can be seen below.