The ATc2.6-5.2 from Narda-ATM is a RF & Microwave Circulator with Frequency 2.6 to 5.2 GHz, Average Power Forward 2 W, Peak Power 20 W, Insertion Loss 0.4 to 0.5 dB, Isolation 18 to 20 dB. Tags: Coaxial Circulator. More details for ATc2.6-5.2 can be seen below.