The T1HN1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.3 to 1.33 GHz, Average Power 350 W, Average Power Forward 350 W, Insertion Loss 0.2 dB, Isolation 23 dB. Tags: Module with Connectors, Coaxial Isolator. More details for T1HN1 can be seen below.