The ATc2.30-2.70 from Narda-ATM is a RF & Microwave Circulator with Frequency 2.3 to 2.7 GHz, Average Power Forward 10 W, Peak Power 500 W, Insertion Loss 0.4 dB, Isolation 20 dB. Tags: Coaxial Circulator. More details for ATc2.30-2.70 can be seen below.