The T1XK11 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 900 MHz to 1.9 GHz, Average Power 1 W, Average Power Forward 1 W, Insertion Loss 1 dB, Isolation 15 dB. Tags: Module with Connectors, Coaxial Isolator. More details for T1XK11 can be seen below.