The WVI-11.5G-1GBW01 from Wevercomm is a RF & Microwave Isolator with Frequency 11 to 12 GHz, Average Power Forward 1 W, Insertion Loss 0.5 dB, Isolation 20 dB, Operating Temperature -10 to 65 Degree C. Tags: Module with Connectors, Coaxial Isolator. More details for WVI-11.5G-1GBW01 can be seen below.