The T1AD1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.889 to 2.111 GHz, Average Power 12 W, Average Power Forward 12 W, Insertion Loss 0.5 dB, Isolation 20 dB. Tags: Module with Connectors, Coaxial Isolator. More details for T1AD1 can be seen below.