The RFSL9129N from RF-CI is a RF & Microwave Isolator with Frequency 118 to 144 MHz, Average Power Forward 100 W, Average Power Reverse 50 W, Insertion Loss 0.8 to 1 dB, Isolation 17 to 18 dB. Tags: Module with Connector, Coaxial Isolator. More details for RFSL9129N can be seen below.