The CZ3D2 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 330 to 403 MHz, Average Power 70 to 150 W, Average Power Forward 70 to 150 W, Insertion Loss 0.5 dB, Isolation 20 dB. Tags: Module with Connectors, Coaxial Isolator. More details for CZ3D2 can be seen below.