The UIYCDC11256A from UIY Inc. is a RF & Microwave Circulator with Frequency 140 to 300 MHz, Bandwidth 40 MHz, Average Power Forward 300 W, Average Power Reverse 300 W, Insertion Loss 0.8 dB. Tags: Module with Connectors, Coaxial Circulator. More details for UIYCDC11256A can be seen below.