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• <br /> Figure 3 S <br /> ANTENNAS <br /> • <br /> WHIP ANTENNA PANEL ANTENNA DISH ANTENNA <br /> • <br /> 2-6 INCHES <br /> 6-12 INCHES <br /> 1.5-3 FEET <br /> • <br /> 1-18 FEET <br /> 4-5 FEET 4-6 FEET <br /> – am —/r 6-8 INCHES <br /> S <br /> Whip antennas (also known as stick,omnidirectional, or pipe antennas) emit signals in a 360 degree <br /> horizontal plane and a compressed vertical plane. Shaped cylindrically, whip antennas have <br /> diameters between two and six inches, and measure between one and eighteen feet in height. <br /> Panel antennas (also known as sector antennas) have vertical and horizontal planes that aim signals <br /> in specific directions. Panel antennas generally measure four to five feet in height, sL: t;, twelve <br /> inches in width, and six to eight inches in depth. <br /> As stated previously, dish antennas (also known as microwave dishes) have a different function <br /> than whip and panel antennas. Instead of emitting radio waves that carry the call between a <br /> wireless phone and its intended receiver, dish antennas emit microwaves that provide the critical <br /> link between the central computer switching system and the appropriate transmitting or receiving • <br /> antennas. In essence, dish antennas send microwave signals that allow the central switch to transfer <br /> the call between the various antennas closest to the mobile user. Dish antennas generally measure <br /> four to six feet in diameter and one-and-a-half to three feet in depth. <br /> Antenna structures are typically accompanied by equipment buildings 'or boxes. Cellular and <br /> ESMR equipment buildings are generally less than 500 square feet in diameter(12 feet by 24 feet). <br /> PCS equipment facilities, called base stations, are self-contained weather-proof cabinets about the 41) <br /> size of a vending machine. <br /> 12 <br />