The SR1719T01 from QUEST Microwave is a RF & Microwave Isolator with Frequency 17.7 to 19.7 GHz, Average Power Forward 5 W, Average Power Reverse 1 W, Insertion Loss 0.5 dB Max., Isolation 20 dB Min.. Tags: Module with Connector, Coaxial Isolator. More details for SR1719T01 can be seen below.