The T1XX1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.59 to 1.69 GHz, Average Power 65 W, Average Power Forward 65 W, Insertion Loss 0.4 dB, Isolation 18 dB. Tags: Module with Connectors, Coaxial Isolator. More details for T1XX1 can be seen below.