The T3ZK1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 3.2 to 3.6 GHz, Average Power 3 W, Average Power Forward 3 W, Insertion Loss 0.8 dB, Isolation 36 dB. Tags: Module with Connectors, Coaxial Isolator. More details for T3ZK1 can be seen below.