The Dipole-Lo and Dipole-Hi antennas are unity gain half wave dipole antennas. They are constructed of aircraft aluminum to help prevent corrosion. The antennas are available in 50-100Mhz range and 108-174Mhz range. Antenna can be mounted on poles, roofs, or walls with the proper field-supplied mounting hardware. The antenna must be installed with proper grounding for lightning protection.