The 994-037014-003 is a waveguide isolator that operates from 12 to 13.7 GHz. It has an isolation of 26 dB, an insertion loss of 0.15 dB and a VSWR of 1.20:1. The isolator has a waveguide size of WR-75 and can handle up to 3 W of power. It measures 1.75 x 1.75 x 1.50 inch.