The ATc5-10 from Narda-ATM is a RF & Microwave Circulator with Frequency 5 to 10 GHz, Average Power Forward 2 W, Peak Power 20 W, Insertion Loss 0.9 to 1 dB, Isolation 15 to 16 dB. Tags: Coaxial Circulator. More details for ATc5-10 can be seen below.