The UIYCC3538A from UIY Inc. is a RF & Microwave Circulator with Frequency 300 MHz to 1.875 GHz, Average Power Forward 300 W, Average Power Reverse 300 W, Insertion Loss 0.3 dB, Isolation 30 dB. Tags: Coaxial Circulator. More details for UIYCC3538A can be seen below.