The C5XF4 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 6.59 to 6.61 GHz, Average Power 1 W, Average Power Forward 1 W, Insertion Loss 0.4 dB, Isolation 23 dB. Tags: Module with Connectors, Coaxial Isolator. More details for C5XF4 can be seen below.