The C1DT1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.87 to 1.965 GHz, Average Power 1 W, Average Power Forward 1 W, Insertion Loss 0.5 dB, Isolation 45 dB. Tags: Module with Connectors, Coaxial Isolator. More details for C1DT1 can be seen below.