The UIYBCC1920B from UIY Inc. is a RF & Microwave Circulator with Frequency 800 MHz to 18 GHz, Average Power Forward 60 W, Average Power Reverse 60 W, Insertion Loss 0.8 dB, Isolation 14 dB. Tags: Coaxial Circulator. More details for UIYBCC1920B can be seen below.