The UIYBCC1920A from UIY Inc. is a RF & Microwave Circulator with Frequency 600 MHz to 18 GHz, Average Power Forward 60 W, Average Power Reverse 60 W, Insertion Loss 1.5 dB, Isolation 10 dB. Tags: Coaxial Circulator. More details for UIYBCC1920A can be seen below.