The LFI-300500 from Atlantic Microwave is a RF & Microwave Isolator with Frequency 300 to 500 MHz, Average Power 50 W, Average Power Forward 50 W, Average Power Reverse 10 W, Insertion Loss 0.9 dB. Tags: Module with Connector, Coaxial Isolator. More details for LFI-300500 can be seen below.