The CC 12.4 from TKI-Ferrit is a RF & Microwave Circulator with Frequency 11.7 to 13.1 GHz, Average Power Forward 1 W, Average Power Reverse 1 W, Insertion Loss 0.7 dB, Isolation 15 dB. Tags: Module with Connectors, Coaxial Circulator. More details for CC 12.4 can be seen below.