The T1FV3 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.85 to 1.99 GHz, Average Power 20 W, Average Power Forward 20 W, Insertion Loss 0.5 dB, Isolation 50 dB. Tags: Module with Connectors, Coaxial Isolator. More details for T1FV3 can be seen below.