The T1KH2 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.551 to 1.601 GHz, Average Power 200 W, Average Power Forward 200 W, Insertion Loss 0.3 dB, Isolation 20 dB. Tags: Module with Connectors, Coaxial Isolator. More details for T1KH2 can be seen below.