The ATc3.5-7.0 from Narda-ATM is a RF & Microwave Circulator with Frequency 3.5 to 7 GHz, Average Power Forward 2 W, Peak Power 20 W, Insertion Loss 0.35 to 0.4 dB, Isolation 18 to 20 dB. Tags: Coaxial Circulator. More details for ATc3.5-7.0 can be seen below.