The T1ZH1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.71 to 1.85 GHz, Average Power 10 W, Average Power Forward 10 W, Insertion Loss 0.4 dB, Isolation 20 dB. Tags: Drop-In, Drop-In Isolator. More details for T1ZH1 can be seen below.