Research on electromagnetic radiation from utility smart meters using RF communication.
Smart meters are digital utility devices that automatically transmit your energy usage data to power companies using radiofrequency (RF) electromagnetic fields in the 900 MHz to 2.4 GHz range. Unlike the old analog meters that required manual readings, these devices communicate wirelessly multiple times per day, creating a new source of EMF exposure directly on your home.
Arthur W. Guy · 1977
The system was designed for the National Institute for Occupational Safety and Health to determine human RF exposure thresholds in the frequency range D.C. to 100 MHz. The final design uses concentric stainless steel rings with a teflon bottom that forms a liquid-tight seal compressed by brass retainer clamps.
Arthur W. Guy · 1977
This 1977 NIOSH technical report describes the development of a radiofrequency (RF) cell culture irradiation system capable of controlling both temperature and electromagnetic field strength. The research focused on creating standardized laboratory equipment for studying how RF radiation affects living cells in controlled conditions. This represents early foundational work for understanding cellular responses to electromagnetic field exposure.
Maj R. B. Graham, Capt John M. Hemphill · 1977
Arthur W. Guy · 1977
NIOSH researchers developed a specialized laboratory system in 1977 for exposing cell cultures to radiofrequency (RF) radiation while precisely controlling temperature and electromagnetic field strength. This technical report describes equipment designed to study how RF energy affects living cells under controlled laboratory conditions. The system represented early efforts to standardize RF exposure research and eliminate confounding variables like heat effects.
Christopher N. Dodge · 1977
Tikhonchuk VS · 1977
Arthur W. Guy, Michael D. Webb, John A. McDougall · 1977
Unknown authors · 1977
Curtis C. Johnson · 1977
John M. Osepchuk · 1977
NEUKOMM Peter A. · 1977
Maximum transmission loss increased from 20 to 30 dB as frequency rose from 200 to 1000 MHz at a 35 mm distance, and from 17 to 24 dB at a 77 mm distance over the same frequency range. The study concluded that ideal telemetry frequencies lie within 75-150 MHz, where losses stay below 18 dB at 35 mm and below 14 dB at 77 mm antenna-trunk distance. The flat helical dipole was recommended as the best antenna for biomechanics telemetry because varying body distance does not detune it out of its bandwidth.
John M. Osepchuk · 1977
Richard A. Tell · 1977
Unknown authors · 1977
Unknown authors · 1977
In 1977, Health and Welfare Canada conducted a safety assessment of electromagnetic radiation exposure levels in and around Toronto's CN Tower, which was then the world's tallest structure. This government report evaluated potential health risks from the tower's broadcast antennas and transmission equipment. The study represents an early official examination of EMF exposure from major broadcasting infrastructure in urban environments.
Maria A. Stuchly · 1977
Unknown authors · 1977
This 1977 technical report reviewed the existing scientific literature on cancer-causing properties of both ionizing radiation (like X-rays) and non-ionizing radiation (including microwaves and radiofrequency fields). The analysis examined various forms of electromagnetic radiation to understand their potential role in cancer development. This represents one of the earliest comprehensive reviews connecting non-ionizing EMF sources to carcinogenic concerns.
Tell R A · 1976
Peter A. Neukomm · 1976
Most telemetry equipment operates between 10 and 1000 MHz with radiated power from a few microwatts to approximately 2 W. Hot spots in animal brains show heating potential 10 to 15 times higher than predicted by the RAC method.
Pacific Measurements Inc. · 1976
Model 1036 measures from -40 dBm to +10 dBm in a single range while Model 1037 measures from -30 dBm to +20 dBm. The instruments achieve rated accuracy of +0.02 dB on the upper 30 dB and +0.04 dB on the lower 20 dB of the power range. A self-check feature uses a front-panel calibrator providing 10 milliwatts accurate within +0.06 dB at 30 MHz. The detectors are protected against overloads up to 10 times full-scale rating and are field-repairable.
Ernest N. Albert · 1976
R. A. Tell · 1976
Wang YC, Hopfer S · 1976
Wang JCH, Linthicum JM · 1976
Frank M. Greene · 1975