The T-2S73U-20 from Teledyne Microwave Solutions is a RF & Microwave Isolator with Frequency 2 to 4.5 GHz, Average Power Forward 50 W, Average Power Reverse 2 W, Insertion Loss 0.6 dB, Isolation 16 dB. Tags: Module with Connector, Coaxial Isolator. More details for T-2S73U-20 can be seen below.