The T3YZ1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 3 to 3.5 GHz, Average Power 30 W, Average Power Forward 30 W, Insertion Loss 0.3 dB, Isolation 20 dB. Tags: Module with Connectors, Coaxial Isolator. More details for T3YZ1 can be seen below.