The T1DZ3 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.85 to 1.865 GHz, Average Power 35 W, Average Power Forward 35 W, Insertion Loss 0.15 dB, Isolation 25 dB. Tags: Drop-In, Drop-In Isolator. More details for T1DZ3 can be seen below.