The T1DQ1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.02 to 1.11 GHz, Average Power 190 W, Average Power Forward 190 W, Insertion Loss 0.5 dB, Isolation 40 dB. Tags: Module with Connectors, Coaxial Isolator. More details for T1DQ1 can be seen below.