The T1ZU9 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.855 to 1.87 GHz, Average Power 5 W, Average Power Forward 5 W, Insertion Loss 0.5 dB, Isolation 25 dB. Tags: Drop-In, Drop-In Isolator. More details for T1ZU9 can be seen below.