The GL-T-4513-25-30 from A-Info is a RF & Microwave Isolator with Frequency 450 MHz to 1.3 GHz, Bandwidth 100 MHz, Average Power Forward 30 W, Average Power Reverse 5 W, Insertion Loss 0.3 dB. Tags: Module with Connector, Coaxial Isolator. More details for GL-T-4513-25-30 can be seen below.