The 102637D from EM Design is a 4-port Waveguide Circulator that operates at a center frequency of 2.998 GHz. This high power circulator can be optimized for various other frequencies including 2.856 GHz. This S-band circulator can handle an average power of 70 KW and peak power of 15 MW. It has an insertion loss of less than 0.25 dB, isolation of over 32 dB, and a VSWR of less than 1.1:1. This device measures 51 inches in length and has a CPR284F flange. It is can be used with high average power klystrons for isolating reflection from resonant loads such as accelerators or other similar devices.