The T1AU5 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.93 to 1.99 GHz, Average Power 750 W, Average Power Forward 750 W, Insertion Loss 0.25 dB, Isolation 24 dB. Tags: Module with Connectors, Coaxial Isolator. More details for T1AU5 can be seen below.