The UIYBCI3538A from UIY Inc. is a RF & Microwave Isolator with Frequency 380 to 460 MHz, Average Power Forward 300 W, Average Power Reverse 30 W, Insertion Loss 0.5 dB, Isolation 18 dB. Tags: Module with Connector, Coaxial Isolator. More details for UIYBCI3538A can be seen below.