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Showing results for: radio

Analysis of Actual Transmitted Power from Hundreds of 5G FR2 Radio Base Stations over One Month in Urban Areas in Japan

Research RF Safe Research Library Jan 1, 2025

This exposure/compliance assessment study collected 5- and 30-minute transmitted power data over one month from more than 400 5G FR2 beamforming base stations in urban Japan to evaluate the IEC 62232:2025 “actual maximum approach.” All measured transmitted powers were below configured maxima, with 30-minute averaged…

Model Variability in Assessment of Human Exposure to Radiofrequency Fields

Research RF Safe Research Library Jan 1, 2025

This review examines how variability in computational dosimetry models affects assessment of human RF exposure from MHz to terahertz frequencies, focusing on SAR, absorbed power density, and temperature rise. It reports that anatomical scaling and model choices can drive meaningful differences in predicted SAR…

Behaviour and reproduction of Drosophila melanogaster exposed to 3.6 GHz radio-frequency electromagnetic fields

Research RF Safe Research Library Jan 1, 2025

This animal study assessed whether 3.6 GHz RF-EMF exposure affects behaviour and reproduction in adult Drosophila melanogaster, using micro-CT-based digital-twin dosimetry and numerical simulations. It reports no significant changes in locomotor activity after 5 days at 5.4–9 V/m and no effect on fecundity over 48…

Non-thermal biological effects of radiofrequency electromagnetic radiation: Mechanistic insights into male reproductive vulnerability in the era of ubiquitous exposure

Research RF Safe Research Library Jan 1, 2025

This narrative review discusses proposed non-thermal mechanisms by which chronic, low-intensity RF-EMR from ubiquitous wireless sources may affect male reproductive health. It highlights oxidative stress, mitochondrial dysfunction, impaired testosterone synthesis/steroidogenesis, and declines in sperm quality as…

Radiofrequency radiation-induced gene expression

Research RF Safe Research Library Jan 1, 2025

This review summarizes studies reporting radiofrequency radiation (RFR)-associated changes in gene expression across biological systems. Reported affected genes relate to cellular stress responses, oxidative processes, apoptosis, DNA damage detection/repair, protein repair, and neural function regulation. The authors…

Effects of Simultaneous In-Vitro Exposure to 5G-Modulated 3.5 GHz and GSM-Modulated 1.8 GHz Radio-Frequency Electromagnetic Fields on Neuronal Network Electrical Activity and Cellular Stress in Skin Fibroblast Cells

Research RF Safe Research Library Jan 1, 2025

This in-vitro study exposed primary cortical neurons and human immortalized skin fibroblasts to simultaneous 5G-modulated 3.5 GHz and GSM-modulated 1.8 GHz RF-EMF at SARs of 1 or 4 W/kg. It reports no significant changes in neuronal network firing/bursting activity and no alteration of mitochondrial ROS in…

Male Reproductive and Cellular Damage After Prenatal 3.5 GHz Radiation Exposure: One-Year Postnatal Effects

Research RF Safe Research Library Jan 1, 2025

This animal study examined whether prenatal exposure to 3.5 GHz radiofrequency radiation (2 hours/day) affects male reproductive outcomes later in life. Male rat offspring assessed at 12 months showed multiple adverse testicular and cellular findings in exposed groups versus sham controls, including impaired…

Synergistic Effects of 2600 MHz Radiofrequency Exposure and Indomethacin on Oxidative Stress and Gastric Mucosal Injury in Rats

Research RF Safe Research Library Jan 1, 2025

This rat study tested whether 2600 MHz radiofrequency field exposure interacts with indomethacin to affect gastric tissue. Both exposures alone were reported to increase oxidative stress and reduce antioxidant markers in the stomach. Co-exposure was reported to intensify oxidative stress, apoptosis, and histological…

Exposure Variability Between 1- or 6-Minute and 30-Minute Averaging Time Lengths in Radiofrequency-Electromagnetic Field Exposure Monitoring

Research RF Safe Research Library Jan 1, 2025

This exposure assessment study compared RF-EMF measurements averaged over 1, 6, and 30 minutes using contiguous 1-minute data collected over 30 minutes at four indoor/outdoor sites across 15 frequency bands. Relative deviations between shorter averaging times and 30-minute averages were largely within ±3 dB. However,…

Visualizing radiofrequency electromagnetic field exposure through Voronoi-based maps

Research RF Safe Research Library Jan 1, 2025

This exposure-assessment study proposes a Voronoi-diagram approach to visualize RF-EMF exposure across a city using personal exposimeter measurements of RMS electric field at seed points. Most mapped areas corresponded to about 1.9 V/m, with a maximum reported value of 11.4 V/m, all below the cited ICNIRP guideline…

The WHO-commissioned systematic reviews on health effects of radiofrequency radiation provide no assurance of safety

Research RF Safe Research Library Jan 1, 2025

This paper evaluates and critiques 12 WHO-commissioned systematic reviews and meta-analyses on RF-EMF health effects across outcomes including cancer and reproductive endpoints. It argues that serious methodological flaws and limitations in the WHO reviews prevent them from providing assurance of safety for cell…

Differential metabolic responses of mouse Leydig and spermatogonia cells to radiofrequency electromagnetic field exposure

Research RF Safe Research Library Jan 1, 2025

This in vitro study used LC-MS metabolomics to assess how continuous versus intermittent RF-EMF irradiation affects mouse Leydig (TM3) and spermatogonia (GC-1) cells. The authors report stronger metabolic disturbances in TM3 cells under continuous exposure, including changes in amino acid and glutathione-related…

Radiofrequency regulates the BET-mediated pathways in radial glia differentiation in human cortical development

Research RF Safe Research Library Jan 1, 2025

This in vitro study reports that radiofrequency (RF) exposure in the 800–2,400 MHz range modulates differentiation pathways in human cortical organoids derived from embryonic stem cells. RF exposure is described as maintaining radial glia stem cell identity and delaying differentiation, alongside induction of…

3.5GHz radiofrequency electromagnetic fields (RF-EMF) on metabolic disorders in Drosophila melanogaster

Research RF Safe Research Library Jan 1, 2025

This animal study used metabolomics to assess metabolic changes in male Drosophila melanogaster exposed to 3.5 GHz RF-EMF at 0.1, 1, and 10 W/m². It reports disruptions in four metabolic pathways and 34 differential metabolites, with significant decreases in several metabolites including GABA, glucose-6-phosphate,…

Bacterial Adaptation to Radiofrequency Electromagnetic Fields Based on Experiences from Ionizing Radiation

Research RF Safe Research Library Jan 1, 2025

This 2025 review summarizes historical and modern literature on how bacteria may adapt to radiofrequency electromagnetic fields from common sources such as mobile phones and Wi-Fi. It argues that RF-EMF exposure can influence bacterial survival mechanisms and could potentially compromise therapeutic interventions by…

Extremely Low-Frequency Magnetic Fields (ELF-MF) and Radiofrequency: Risk of Childhood CNS Tumors in a City with Elevated ELF-MF Exposure

Research RF Safe Research Library Jan 1, 2025

This case-control study in Mexico City (2017–2022) evaluated residential ELF-MF and device-use proxies for RF exposure in relation to childhood CNS tumor risk. Elevated residential ELF-MF (≥0.4 μT) was associated with approximately doubled odds of CNST, while cell phone use showed no association. Prolonged tablet…

Effect of electromagnetic radiations from mobile towers on genetic damage and genetic polymorphism in humans: a review on India's perspective

Research RF Safe Research Library Jan 1, 2025

This narrative review examines research on radiofrequency electromagnetic radiation (RF-EMR) from mobile towers and its potential association with genetic damage and genetic polymorphism in humans, with an emphasis on India. The abstract states that RF-EMR exposure may affect genetic material and suggests a link…

Systematic reviews and meta-analyses for the WHO assessment of health effects of exposure to radiofrequency electromagnetic fields, an introduction

Research RF Safe Research Library Jan 1, 2025

This editorial introduces a special issue supporting the WHO assessment of health effects from RF-EMF exposure, based on nine protocols and twelve systematic reviews developed over four years by more than 80 experts. It summarizes that human evidence for major cancers was moderate-certainty for no or only small…

Carcinogenicity of Radio-Frequency Radiation: Similarities and Differences Between Outcomes of Two Studies

Research RF Safe Research Library Jan 1, 2025

This review compares two epidemiologic studies of radio-frequency radiation (RFR) exposure among military personnel with overlapping patient groups. One study reported a statistically significant increase in cancer among exposed individuals, while the other did not, which the review attributes to a smaller sample…

Altered development in rodent brain cells after 900 MHz radiofrequency exposure

Research RF Safe Research Library Jan 1, 2025

This animal and in vitro study examined non-thermal 900 MHz RF-EMF exposure during prenatal and postnatal development at 0.08 and 0.4 W/kg SAR. The authors report changes consistent with altered neurodevelopment, including reduced BDNF, reduced in vivo cell proliferation, and disrupted synaptic balance in rat pup…

Combined effects of constant temperature and radio frequency exposure on Aedes mosquito development

Research RF Safe Research Library Jan 1, 2025

This laboratory study tested combined effects of constant temperature and RF exposure on development of Aedes aegypti and Aedes albopictus from hatching to adult emergence. Temperature was reported as the primary determinant of developmental timing, with optimal development around 302C. RF exposure (900 MHz and 18…

Magnetic effects in biology: Crucial role of quantum coherence in the radical pair mechanism

Research RF Safe Research Library Jan 1, 2025

This theoretical biophysics study models the radical pair mechanism as an open quantum system to derive an explicit dependence of magnetic-field effects on the spin coherence relaxation time (τ) and chemical kinetics (k). It reports a condition under which RPM effects become significant and estimates τ in…

Radiofrequency Electromagnetic Field Emissions and Neurodevelopmental Outcomes in Infants: A Prospective Cohort Study

Research RF Safe Research Library Jan 1, 2025

This prospective cohort study followed 105 neonates/infants for one year and measured household RF-EMF using a selective radiation meter, categorizing exposure into tertiles. Higher household RF-EMF exposure was associated with lower ASQ-3 neurodevelopmental scores, particularly in motor and problem-solving domains,…

A scoping review and evidence map of radiofrequency field exposure and genotoxicity: assessing in vivo, in vitro, and epidemiological data

Research RF Safe Research Library Jan 1, 2025

This scoping review and evidence map (PRISMA-ScR) summarizes over 500 studies on RF-EMF exposure and genotoxicity across in vitro, in vivo, and epidemiological research. The authors report a higher proportion of significant DNA damage findings in in vivo and epidemiological studies than in vitro studies, with DNA…

Impact of Radiofrequency Electromagnetic Fields on Cardiac Activity at Rest: A Systematic Review of Healthy Human Studies

Research RF Safe Research Library Jan 1, 2025

This systematic review evaluated evidence on RF-EMF exposure and cardiac activity (heart rate and heart rate variability) in healthy humans at rest. Across 28 studies spanning 100 to 110,000 MHz and exposures from minutes to a week, most studies reported no significant effects on resting heart rate, and HRV findings…

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