The T1AZ23 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.62 to 1.67 GHz, Average Power 20 W, Average Power Forward 20 W, Insertion Loss 0.4 dB, Isolation 23 dB. Tags: Drop-In, Drop-In Isolator. More details for T1AZ23 can be seen below.