The ATi3-6 from Narda-ATM is a RF & Microwave Isolator with Frequency 3 to 6 GHz, Average Power 2 W, Average Power Forward 2 W, Peak Power Forward 0.02 kW, Insertion Loss 0.35 to 0.4 dB. Tags: Module with Connector, Coaxial Isolator. More details for ATi3-6 can be seen below.