Coverage weakens with reduced elevation as opposed to a flat horizontal environment. The radio pattern of omnidirectional antennas is doughnut–shaped when viewed as an azimuth. Omnidirectional antennas radiate their radio waves in all directions symmetrically on the horizontal plane, from the position of the antenna. The waterproof / weatherproof dipole antennas that are made of hard-plastic such as ABS, are not as durable in the weather, long-term, as fiberglass omni-directional antennas, though their low-cost makes them a viable alternative that can be replaced multiple times for less than the cost of a fiberglass antenna. Straight (no angle): These typically have waterproof / weatherproof ratings.This form is a waterproof antenna and typically is IP-rated. Therefore articulating right-angle antennas are for indoor use, or for an outside protected environment, such as under an eave. This form is not waterproof / weatherproof, because water can seep in a hole, where the angle is. Articulating right-angle is the most common form: These have a bendable angle at the base, so that they can be mounted at a 90-degree right angle, straight, or at some angle between 90-degrees and 180 degrees.Dipole Omnidirectional Antennas come in three varieties, with regard to the base of the antenna and this variation affects weather the antenna is waterproof / weatherproof:
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