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  • Use of High Gain Omnidirectional Antennas
    be decreased by half. The elevation beamwidth (3 dB points) of a 13 dBi omnidirectional antenna is only 4 degrees (+ 2 degrees). 2. The nulls between the main lobe and the first sidelobes in the elevation pattern for a collinear array fall at approximately twice the 3 dB beamwidth i.e. + 4 degrees for a 13

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