The C-10S64U-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 1.4 dB, Isolation 35 dB. Tags: Coaxial Circulator. More details for C-10S64U-20 can be seen below.