The T1BJ3 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.93 to 1.99 GHz, Average Power 50 W, Average Power Forward 50 W, Insertion Loss 0.15 dB, Isolation 20 dB. Tags: Module with Connectors, Coaxial Isolator. More details for T1BJ3 can be seen below.