The C-1S64U-40 from Teledyne Microwave Solutions is a RF & Microwave Circulator with Frequency 2 to 10 GHz, Average Power Forward 50 W, Peak Power 1000 W, Insertion Loss 1.2 dB, Isolation 35 dB. Tags: Coaxial Circulator. More details for C-1S64U-40 can be seen below.