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What to look for when buying a cell phone signal booster? 

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Understanding the exposure level, or power density, from RF EMF emitted by cell phones under real‐world usage and signal reception conditions, as distinct from the published measurements of maximum Specific Absorption Rate values, may help cell phone users decide whether to take behavioral steps to reduce RF EMF exposure.
The Pew Center's Internet and American Life Project suggests that college students are the most rapid adopters of cell phone technology and research is emerging which suggests high frequency cell phone use may be influencing their health and behavior.
Proceedings ArticleDOI
A.P. Raiva, J. Fabrega-Sanchez 
03 Jul 2005
10 Citations
The results show that if a cavity is chosen appropriately, it can effectively be used for measurement of cell phone antenna efficiency.
We show, through a case study for locating cellular base stations in Erie County, New York State, USA, how the model can be used for capturing demand from both stationary cell phone users as well as cell phone users who are in moving vehicles.
The addition of the mobile phone signal booster enhances the performance of the iPhone application, allowing it to successfully transmit ECGs more consistently than commercial systems in all signal coverage environments. !
The findings show that there are three main factors that affect the qualification of cell phones as a traffic probe: (1) the speed profile of the probe phone in cell coverage; (2) the variability of handoff location where the probe phone switches its jurisdictional cell; and (3) the locational relationship between a reference point and a speed jump (or drop) point in cell coverage.
mm-wave as a hotspot capacity booster, rather than a solution for comprehensive cellular coverage.
While careful weighting can mitigate noncoverage bias in landline telephone surveys, the rapid growth of cell-phone population and their distinctive characteristics suggest it is important to include a cell-phone sample.
It will show that the use of cell phone repeaters with regenerators is a possible technical application that would improve the city's signal issue and its difficulties that lead to a financial and social economic backwardness for the municipality.

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