The T1BF6 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.805 to 1.88 GHz, Average Power 25 W, Average Power Forward 25 W, Insertion Loss 0.2 dB, Isolation 23 dB. Tags: Module with Connectors, Coaxial Isolator. More details for T1BF6 can be seen below.