The ATi5.9-6.4 from Narda-ATM is a RF & Microwave Isolator with Frequency 5.9 to 6.4 GHz, Average Power 2 W, Average Power Forward 2 W, Peak Power Forward 0.02 kW, Insertion Loss 0.1 to 0.15 dB. Tags: Module with Connector, Coaxial Isolator. More details for ATi5.9-6.4 can be seen below.