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700 MHZ spectrum was put for auction recently.
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No one bought it because of its high price.
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The advantage of the 700 MHz spectrum is that the signals travel longer distances than the higher frequencies used by many other wireless systems.
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Networks using this spectrum require fewer cell towers to reach the same geographic area.
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In addition, like TV broadcasting, signals in this spectrum penetrate walls easily.
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The relatively low frequency 700 MHz is considered ideal for enhancing network availability in large, densely built-up cities.
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It can solve the issue of poor signal penetration inside buildings.
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However, less data can be transmitted over these radio waves.
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Higher-frequency transmissions carry more data, but are poorer at penetrating obstacles.