The PRO-IS-350-D1 from Amphenol Procom is a RF & Microwave Isolator with Frequency 340 to 380 MHz, Average Power Forward 150 W, Insertion Loss 1 dB, Isolation 80 dB. Tags: Module with Connector, Coaxial Isolator. More details for PRO-IS-350-D1 can be seen below.