The LTB12A1W from Fiplex Communications is a RF & Microwave Isolator with Frequency 136 to 174 MHz, Average Power Forward 100 W, Average Power Reverse 20 W, Insertion Loss 1 dB, Isolation 40 dB. Tags: Module with Connectors, Coaxial Isolator. More details for LTB12A1W can be seen below.