The I3213W-4 - Isolator from Sinclair Technologies is a RF & Microwave Isolator with Frequency 430 to 470 MHz, Bandwidth 40 MHz, Average Power 125 W, Average Power Reverse 60 W, Insertion Loss 0.8 dB. Tags: Module with Connectors, Coaxial Isolator. More details for I3213W-4 - Isolator can be seen below.