The C1HR1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.7 to 3.84 GHz, Average Power 1 W, Average Power Forward 1 W, Insertion Loss 0.7 dB, Isolation 15 dB. Tags: Module with Connectors, Coaxial Isolator. More details for C1HR1 can be seen below.