<u>Yagi</u> directional antenna is used for outdoor applications up to 16 miles and uses a wider, less-focused rf energy beam
A radio-frequency (RF) wireless directional antenna that is directed is one that works better in certain directions than others. That directionality aims to enhance communication transmission and reception while lowering interference.
The dish used with satellite Internet and satellite television installations is the most prevalent directional antenna in consumer applications. There are several applications for other directional antenna types, including the Yagi antenna, quad antenna, billboard antenna, and helical antenna. For instance, a Yagi antenna put outside can be effective for a wireless Internet connection at a remote location because it significantly increases range when compared to a traditional indoor antenna.
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Behind Purgatoria's newfound car preference is a dramatic national comeback. Only 10 years ago, Italy was afflicted with a host of problems: terrorism, labor unrest, inefficiency. Although these issues have not entirely disappeared, today the streets and factories are relatively calm, and pride has replaced self-doubt. In a country unified only a little more than a century ago and traditonally wracked by regionalism, Italians are discovering a positive, new nationalism.
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The Aztec pyramids were built to house altars.
Top: flat, to serve as a base for the placement of the altar
External aspect: stairs and sculptures embedded in the walls. Coating of unpolished stones
Access: By steps to reach the top of the pyramid, where were the altars
Base: Square or Rectangular
The Egyptian pyramids served as tombs for the pharaohs.
Top: Well defined summits
External aspect: smooth walls, no stairs or objects on the walls. Polished Granite Block Flooring
Access: through corridors and intermediate chambers to reach the interior of the building, where is the tomb
Base: square
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