The QCI4550X from Qualwave is a RF & Microwave Isolator with Frequency 300 to 1100 MHz, Bandwidth 300 MHz, Average Power Forward 400 W, Average Power Reverse 10 to 100 W, Insertion Loss 0.20 to 0.60 dB. Tags: Module with Connector, Coaxial Isolator. More details for QCI4550X can be seen below.