The ND3100-500 from Cobham Microwave is a Space Qualified Circulator with Frequency 1 to 2 GHz, Average Power Forward 15 W, Average Power Reverse 15 W, Peak Power 30 W, Insertion Loss 0.25 dB. Tags: Drop-in, Drop-in Circulator. More details for ND3100-500 can be seen below.