The T1GK2 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1 to 2 GHz, Average Power 50 W, Average Power Forward 50 W, Insertion Loss 0.6 dB, Isolation 18 dB. Tags: Module with Connectors, Coaxial Isolator. More details for T1GK2 can be seen below.