The ZCI17K-27-31-5A from ZTS Technologies is a RF & Microwave Isolator with Frequency 27 to 31 GHz, Average Power Forward 5 W, Insertion Loss 1.0 dB, Isolation 17 dB, Operating Temperature -30 to 70 Degree C. Tags: Coaxial Isolator. More details for ZCI17K-27-31-5A can be seen below.