The T4YM1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 4 to 8 GHz, Average Power 40 W, Average Power Forward 40 W, Insertion Loss 0.5 dB, Isolation 15 dB. Tags: Module with Connectors, Coaxial Isolator. More details for T4YM1 can be seen below.