The CAKS Calibrated Antenna is a directional horn antenna used for field intensity measurements and susceptibility tests, point-to-point communications and other RF / Microwave applications. It is linearly polarized, with high directivity and high front to back ratio. It is tripod mountable. It operates in the frequency range 9.8 to 15.35GHz, has a typical VSWR of 3:1, a midband gain of 30 dB, and a directivity of 3?.