The T1AZ19 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 0.4 dB, Isolation 20 dB. Tags: Drop-In, Drop-In Isolator. More details for T1AZ19 can be seen below.