The T6XD4 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 7.5 to 18 GHz, Average Power 1 W, Average Power Forward 1 W, Insertion Loss 1 dB, Isolation 14 dB. Tags: Module with Connectors, Coaxial Isolator. More details for T6XD4 can be seen below.