The C1FY1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 960 MHz to 1.206 GHz, Average Power 250 W, Average Power Forward 250 W, Peak Power 500 W, Insertion Loss 0.5 dB. Tags: Module with Connectors, Coaxial Isolator. More details for C1FY1 can be seen below.