The input impedance is 50 ohms and the VSWR is less than 2.5:1
All major components of the radiating and support structures are aluminum. The central feed section is protected and weatherproofed with an epoxy fiberglass cover. Prime consideration has been given to a rugged, reliable design suitable for shipboard or other similar applications. It is designed to comply with MIL-E-16400F, Class 2.