The WVI-12.5G-5GBW03 from Wevercomm is a RF & Microwave Isolator with Frequency 10 to 15 GHz, Average Power Forward 30 W, Average Power Reverse 10 W, Insertion Loss 0.5 dB, Isolation 20 dB. Tags: Module with Connectors, Coaxial Isolator. More details for WVI-12.5G-5GBW03 can be seen below.