The DNF2540-T0001 from Mercury Systems is a RF & Microwave Circulator with Frequency 960 MHz to 1.21 GHz, Bandwidth 256 MHz, Average Power Forward 100 W, Insertion Loss 0.6 dB, Isolation 17 dB. Tags: Drop-in Circulator. More details for DNF2540-T0001 can be seen below.