The UIYBCI4550A from UIY Inc. is a RF & Microwave Isolator with Frequency 950 MHz to 1.45 GHz, Bandwidth 500 MHz, Average Power Forward 200 W, Average Power Reverse 30 W, Insertion Loss 0.6 dB. Tags: Module with Connectors, Coaxial Isolator. More details for UIYBCI4550A can be seen below.