The C-10S63U-20 from Teledyne Microwave Solutions is a RF & Microwave Circulator with Frequency 10.0 to 20.0 GHz, Average Power Forward 50 W, Peak Power 1000 W, Insertion Loss 0.7 dB, Isolation 17 dB. Tags: Coaxial Circulator. More details for C-10S63U-20 can be seen below.