The QCI-4000-8000-K2-N-1 from Qualwave is a RF & Microwave Isolator with Frequency 4000 to 8000 MHz, Bandwidth 4000 MHz, Average Power Forward 200 W, Insertion Loss 0.6 dB, Isolation 15 dB. Tags: Module with Connector, Coaxial Isolator. More details for QCI-4000-8000-K2-N-1 can be seen below.