The JID1200T1600M4 from JQL Electronics is a RF & Microwave Isolator with Frequency 1.2 to 1.6 GHz, Average Power Forward 35 W, Average Power Reverse 35 W, Insertion Loss 0.5 dB, Isolation 18 dB. Tags: Drop-In, Drop-In Isolator. More details for JID1200T1600M4 can be seen below.