The DPV-40 is a vertically polarized, omni-directional, dipole antenna that covers the frequency range 118 to 137 MHz. It is sealed in a fiberglass radome that provides mechanical and environmental protection. The antenna is designed for ground-to-air communications and use in an extreme environment. It is constructed of corrosion resistant materials. It is provided with a coaxial mounting arrangement to mount atop a 2-1/2 inch IPS pipe, shielding the electrical connections away from the environment.