The ZCI18S-4-8-60A from ZTS Technologies is a RF & Microwave Isolator with Frequency 4 to 8 GHz, Average Power Forward 60 W, Insertion Loss 0.6 dB, Isolation 18 dB, Operating Temperature 10 to 60 Degree C. Tags: Coaxial Isolator. More details for ZCI18S-4-8-60A can be seen below.