Cell phones and smartphones are becoming more of a commodity with each passing day — it seems like just about everyone young and old carries at least one.
The unfortunate truth as many are aware, however, is that cell phones emit varying levels of radiation that can be harmful. While the extent of the possible damage caused by cell phones is an ongoing debate with plenty of evidence on both sides of the fence, it’s always better to be safe than sorry. It’s also a good idea to check the radiation levels of your current phone so you know if you should be extra safe. Despite the government’s view that cell phones pose no danger, some researchers note that most of us have been using them for less than a decade. Here’s one question that you almost never see asked when the experts like Lai are interviewed in the press about the cell phone-cancer connection: What are their best practices when it comes to cell phones?
Given two phones with the same features and the same price, shouldn’t we be considering the one with the lower SAR rating? Once I got through Marry’s lecture though, I was still curious as to why I had to call him to get the SAR rating.
Measurement of the emissions from cell towers presents particular technical challenges beyond those encountered for broadcast antenna sites. A related problem involves the concurrent presence of other signals besides those from the cell phone system.
One of the most significant RF measurement problems, and one responsible for some of the greatest inaccuracy, involves an instrument erroneous response that can occur when there are two or more strong signals present at the same time. An additional challenge results from the fact that power density levels at a cell tower site are not always constant, as they usually are at a broadcast antenna site. RF measurement surveys conducted by EMF Services employ procedures and equipment to address each of the challenges noted above. The popularity of cell phones and wireless communication devices has resulted in a proliferation of cell towers across the American landscape.
EMF Services can conduct testing and site assessments for individuals, schools, building managers, or municipalities who wish to become aware of the RF levels at a location near cell phone or broadcast towers. The purpose of this testing is to empower you to make responsible, fact-based decisions about the RF environment surrounding your community, facility, home, or school. The purpose of our testing services is not to provide a basis for contesting the siting of cell phone towers or to seek their removal once sited. Already, thanks to the introduction of mobile phones, computers, CCTV cameras, satellite televisions and digital radios, our lives are enveloped in electronic radiation. Of course, we cannot see all this electronic activity, but if we could, the sight would be dramatic.


Suggest your Wireless Plan-related website for editorial review and possible inclusion in this product and service provider directory. Do they try to hide them from people, or just want to make them interesting and to fit them to the environment? By simply using a Bluetooth headset, for example, you can ensure that the bulk of any radiation emitted by your phone stays away from your head. 9, the Environmental Working Group (EWG), a public-health advocacy, released a lengthy review of past research linking long-term or frequent cell-phone use with increased rates of brain tumors, migraines and kids’ behavioral problems.
To understand these challenges, a few comments about radio frequency measurement are required.
A very large proportion of antenna sites (cell and broadcast) now have multiple strong signals. People use their cell phones more at some times of the day, and on some days of the week, than at others. A spectrum analyzer is used for identification of RF sources, and for assessment of the relative magnitude of signals in different frequency ranges. Opposition to the placement of these towers has sometimes developed among segments of the population, usually based upon aesthetics, concern over the electromagnetic radiation, or both.
The report that we provide will permit comparison of measured levels with FCC Maximum Permissible Exposures (MPEs), precautionary guidelines, and routine background levels for comparable environments.
We use advanced equipment to perform the most accurate and comprehensive RF exposure assessments in the industry. We provide only enhanced testing services that involve more detailed data collection, and a more extensive and broader coverage report, than a conventional compliance survey.
This position is not the result of an alliance between EMF Services and the cellular service providers. But when you make and re¬ceive calls, your cell phone emits low levels of radio-frequency radiation — a fact that has fueled heated and ongoing scientific debate on the health risks of mobile-phone use. Scientists are waiting for the publication of a $30 million, 14,000-person international study called Interphone, which is meant to nail down the answer once and for all. You can also choose a low-radiation cell phone; the EWG has created a searchable online database that ranks the radiation levels of more than 1,200 models.
Unfortunately, some of the meters used for typical RF compliance surveys are unable to accurately measure the low power densities present at some cell sites.
Instrument design can minimize this problem, but many of the commonly used isotropic broadband meters perform very poorly in this multi-signal environment.
The cellular service providers maintain additional capacity in the form of multiple channels which will become active as needed to meet demand.


If new antennas or towers are planned for your location, our site survey can be used to establish a baseline RF level for later comparison (before and after testing). All services are delivered by personnel with several years of experience in planning and directing the installation of radio communication facilities, using equipment with current factory calibration certificates. Our surveys incorporate procedures and equipment to separately measure cellular power density, in addition to the composite power density (the combination of all RF signals present). But the study ended in 2006 and its authors are still squabbling over the interpretation of their data. In a large number of cases, the other signals present near a cell tower will be as strong as the cellular signals that one is trying to measure. In some cases, we also use a high sensitivity isotropic broadband probe for measurement of the composite power density. Follow-up readings are provided at substantially reduced cost compared to the initial survey.
If exposure reduction measures are desired, recommendations will be included in the report.
We use top quality professional equipment, and extensive procedural safeguards, to ensure the highest degree of RF measurement accuracy. Rather, it represents an effort to avoid leading you down the path toward a disappointing result.
Realistically, this composite measurement of all signals may be the most relevant exposure metric, but an interpretation of the significance of a reading sometimes requires that one know the frequency of the signal that produced it. Our comprehensive analytical report summarizes all this data in a concise and understandable format, but includes an Appendix with detailed site data, such as the spectrum analyzer plots shown below.
The greatest advantage of our surveys over that of other providers is the ability to address the issue of low-level, long-term, non-thermal exposures, and to articulate the scientific rationale for a precautionary exposure guideline.
The RF levels near a cell tower will not approach Maximum Permissible Exposures at ground level where people are present. When necessary, we employ timed signal averaging or data logging to produce an accurate assessment. Further, a court of law is not the best venue for a challenge to the science on which existing standards are based. The best reason for testing and measurement services is to understand the field levels that exist, and what can be done to reduce them.



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