The C-7S53U-10 from Teledyne Microwave Solutions is a RF & Microwave Circulator with Frequency 7.0 to 12.4 GHz, Average Power Forward 50 W, Peak Power 1000 W, Insertion Loss 0.4 dB, Isolation 18 dB. Tags: Coaxial Circulator. More details for C-7S53U-10 can be seen below.