The ATi11.7-12.7 from Narda-ATM is a RF & Microwave Isolator with Frequency 11.7 to 12.7 GHz, Average Power 2 W, Average Power Forward 2 W, Peak Power Forward 0.05 kW, Insertion Loss 0.15 to 0.2 dB. Tags: Module with Connector, Coaxial Isolator. More details for ATi11.7-12.7 can be seen below.