Rooftop and other outdoor antennas

Rooftop and other outdoor antennas

Aerials are attached to roofs in various ways, usually on HA31002P a pole to elevate it above the roof. This is generally sufficient in most areas. In some places; however, such as a deep valley or near taller structures, the antenna may need to be placed significantly higher, using a lattice pt2322 tower or mast. The wire connecting the antenna to indoors is referred to as the downlead or drop, and the longer the downlead is, the greater the signal degradation in the wire.The higher the antenna is placed, the better it will cd4502 perform. An antenna of higher gain will be able to receive weaker signals from its preferred direction. Intervening buildings, topographical features (mountains), and dense forest will weaken the signal; in many cases the signal will be reflected such that a usable strx6756 signal is still available. There are physical dangers inherent to high or complex antennas, such as the structure falling or being destroyed by the weather. There are also varying local ordinances which restrict and limit such things as the height of a structure without obtaining permits. PIC16F877A For example, in the USA, the Telecommunications Act of 1996 allows any homeowner to install An antenna that is designed to receive local television broadcast signals", but that masts higher than 12 feet above the roof-line may be subject to local permitting requirements.