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5G Wireless Technology: Millimeter Wave Health Effects : Nov 14, 2018 (Updated Feb 22, 2019) The emergence of 5G, fifth-generation telecommunications technology, has been in the news lately because the wireless industry has been pushing controversial legislation at the state and federal level to expedite the deployment of this technology. The legislation would block the rights of local governments and their citizens to control the installation of cellular antennas in the public “right-of-way.” Cell antennas may be installed on public utility poles every 10-20 houses in urban areas. According to the industry, as many as 50,000 new cell sites will be required in California alone and at 800,000 or more new cell sites nationwide.Although many major cities and newspapers have opposed this legislation, the potential health risks from the proliferation of new cellular antenna sites have been ignored. These cell antennas will expose the population to new sources of radio frequency radiation including millimeter waves.5G will employ low- (0.6 GHz - 3.7 GHz), mid- (3.7 – 24 GHz), and high-band frequencies (24 GHz and higher). In the U.S., the Federal Communications Commission (FCC) has allocated “low-band” spectrum at 0.6 GHz (e.g., 600 MHz), “mid-band” spectrum in the 3.5 GHz range, and 11 GHz of “high-band” frequencies including licensed spectrum from 27.5-28.35 GHz and 37-40 GHz, as well as unlicensed spectrum from 64-71 GHz which is open to all wireless equipment manufacturers. Prior to widespread deployment, major cell phone carriers are experimenting with new technologies that employ “high-band” frequencies in communities across the country. The “high-band” frequencies largely consist of millimeter waves (MMWs), a type of electromagnetic radiation with wavelengths of one to ten millimeters and frequencies ranging from 30 to 300 GHz (or billions of cycles per second). The characteristics of MMWs are different than the “low-band” (i.e., microwave) frequencies which are currently in use by the cellular and wireless industries. MMWs can transmit large amounts of data over short distances. The transmissions can be directed into narrow beams that travel by line-of-sight and can move data at high rates (e.g., up to 10 billion bits per second) with short lags (or latencies) between transmissions. The signals are blocked by buildings, and foliage can absorb much of their energy. Also, the waves can be reflected by metallic surfaces. Although antennas can be as small as a few millimeters, “small cell” antenna arrays may consist of dozens or even hundreds of antenna elements.What does research tell us about the biologic and health effects of millimeter waves?Millimeter waves (MMWs) are mostly absorbed within 1 to 2 millimeters of human skin and in the surface layers of the cornea. Thus, the skin or near-surface zones of tissues are the primary targets of the radiation. Since skin contains capillaries and nerve endings, MMW bio-effects may be transmitted through molecular mechanisms by the skin or through the nervous system. Thermal (or heating) effects occur when the power density of the waves is above 5–10 mW/cm2. Such high-intensity MMWs act on human skin and the cornea in a dose-dependent manner—beginning with heat sensation followed by pain and physical damage at higher exposures. Temperature elevation can impact the growth, morphology and metabolism of cells, induce production of free radicals, and damage DNA.The maximum permissible exposure that the FCC permits for the general public is 1.0 mW/cm2 averaged over 30 minutes for frequencies that range from 1.5 GHz to 100 GHz. This guideline was adopted in 1996 to protect humans from acute exposure to thermal levels of radiofrequency radiation. However, the guidelines were not designed to protect us from nonthermal risks that may occur with prolonged or long-term exposure to radiofrequency radiation.With the deployment of fifth generation wireless infrastructure (aka 5G), much of the nation will be exposed to MMWs for the first time on a continuous basis. Due to FCC guidelines, these exposures will likely be of low intensity. Hence, the health consequences of 5G exposure will be limited to non-thermal effects produced by prolonged exposure to MMWs in conjunction with exposure to low- and mid-band radiofrequency radiation. Unfortunately, few studies have examined prolonged exposure to low-intensity MMWs, and no research that I am aware of has focused on exposure to MMWs combined with other radiofrequency radiation.Although biologic effects of low-intensity MMWs have been studied for decades, particularly in Eastern Europe, study results are often inconsistent because the effects are related to many factors including the frequency, modulation, power density, and duration of the exposures, as well as the type o... http://bit.ly/MMWstudy1977.Related http://www.avaate.org/IMG/pdf/IEEE_MTT_paper.pdfLe http://bit.ly/2oS3rKDHaas http://www.ncbi.nlm.nih.gov/pubmed/26899844Wang

5G Wireless Technology: Millimeter Wave Health Effects 5G: What will be the health effects of exposing everyone to millimeter waves?

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