Clinton Cox, Ed Foley, Betsy Egan, Bob Herrick · 1979
NIOSH conducted a 1978 workplace survey at a Connecticut company to measure RF radiation from industrial heat sealers and identify workers for potential health studies. They found that 10 of 11 heat sealers produced electric field levels exceeding 200 V/M, well above typical background levels. This survey was part of early efforts to understand occupational RF exposure risks before widespread wireless technology adoption.
Pacific Measurements Inc. · 1979
This 1979 technical report describes the Model 1045 ultra-fast RF power meter, a specialized instrument for measuring radiofrequency and microwave power levels. The device was designed for automatic testing applications, featuring detector and multiplexer components to measure power across various frequency ranges. While this is technical documentation rather than health research, such instruments are essential for measuring EMF exposures that scientists later study for biological effects.
Paul S. Ruggera · 1979
This 1979 government study measured electromagnetic field levels near Citizens Band (CB) radio antennas to understand exposure patterns in close proximity to these transmitters. CB radios operate around 27 MHz and were extremely popular communication devices in the late 1970s. The research provided important baseline data for assessing RF exposure from CB antenna installations.
R.D. McAfee et al. · 1979
Researchers trained 12 monkeys to expose their faces and eyes to 9.31 GHz microwave radiation at 150 mW/cm² for 30-40 sessions, then monitored them for one year. No eye damage or cataracts developed from this high-frequency microwave exposure. This study examined whether microwave radiation at frequencies used in some radar and communication systems could cause eye injury.
G.M. Samaras et al. · 1979
This 1979 study developed two methods for using microwave radiation to create controlled heat in cat brains as a potential cancer treatment. Researchers found they could precisely heat brain tissue to therapeutic temperatures using either implanted antennas at 2450 MHz or external arrays at 915 MHz. The goal was killing brain tumors with heat while protecting healthy tissue.
D. I. McRee, P. Nawrot · 1979
This 1979 study exposed pregnant mice to 2.45 GHz microwave radiation (the same frequency used in microwave ovens and WiFi) at various power levels for 8 hours daily during pregnancy. Researchers tested three different exposure intensities and used multiple control groups to separate microwave effects from heat and handling stress. The study found biological effects from microwave exposure during pregnancy.
James C. Lin, John C. Nelson, Merlin E. Ekstrom · 1979
Researchers exposed newborn mice to 148 MHz radio frequency radiation for one hour daily over 10 weeks, then monitored them for nearly two years. The study found no differences in blood parameters, body weight, or disease rates between exposed and control animals at the power levels tested.
Charles L. Sheridan et al. · 1979
This 1979 study exposed mice to near-lethal doses of 2450 MHz microwave radiation while in the womb and tracked their lifespan over three years. The research found that exposed mice actually developed fewer tumors than unexposed controls, though the difference was too small to be statistically meaningful. The study also discovered that intense microwave exposure causes dangerous overheating but animals cannot sense the radiation to escape it.
John R. Thomas, Linda S. Burch · 1979
Researchers exposed rats to low-level pulsed microwave radiation at 1 milliwatt per square centimeter while giving them chlordiazepoxide, a sedative drug. The microwave exposure made the drug's behavioral effects stronger, even though the radiation alone had no apparent impact on the rats' behavior.
Dr. S. S. Stuchly · 1979
This 1980 journal article by Dr. S.S. Stuchly examined microwave power applications and biological effects, focusing on medical uses like diathermy (therapeutic heating) and instrumentation systems. The research reviewed how microwave energy interacts with biological systems and evaluated heating applications in medical settings. This work contributed to early understanding of microwave bioeffects during a period when microwave technology was expanding rapidly in medical and industrial applications.
Unknown authors · 1979
This 1979 government report outlined a research framework to study the biological and physical effects of radiofrequency and microwave radiation on living tissue. The document established priorities for investigating how different tissues absorb electromagnetic energy and respond to various exposure levels. This represents early official recognition that non-ionizing radiation warranted systematic biological research.
William A. Herman, Donald M. Witters, Jr. · 1979
This 1979 government report evaluated the accuracy and reliability of inexpensive microwave detection instruments available to researchers and safety professionals. The study examined how well these budget survey meters could measure microwave radiation levels compared to more expensive laboratory-grade equipment.
Stan Neuder · 1979
This 1979 technical report examined radiofrequency radiation exposure levels for workers operating industrial RF sealers, which use electromagnetic energy to heat and seal materials like plastics. The study assessed dose levels to help establish occupational safety guidelines for these high-power industrial devices. This represents early research into workplace EMF exposure from industrial equipment.
Paul S. Ruggera · 1979
This 1979 government report measured electromagnetic field levels near Citizens Band (CB) radio antennas to assess exposure risks. The study documented RF radiation levels that people might encounter when operating or standing close to CB antenna systems. This research provided early data on RF exposure from popular two-way radio equipment used by millions of Americans.
Clinton Cox, Betsy Egan, Bill Murray, Bob Herrick · 1979
NIOSH conducted a 1978 workplace survey at Standard Plastic Products to measure radiofrequency radiation from industrial heat sealers. All three heat sealers produced electric field levels exceeding 1000 V/M, well above typical exposure limits. The study aimed to identify worker populations for future health effect research.
Dr. S. S. Stuchly · 1979
This 1979 journal article by Dr. S.S. Stuchly examined microwave power applications across industrial, scientific, medical and domestic uses, including bioeffects research and dosimetry methods. The research focused on understanding how microwave radiation affects biological systems and measuring exposure levels. This work helped establish early foundations for microwave safety standards during the technology's rapid expansion.
Paul S. Ruggera · 1979
This 1979 government study measured electromagnetic field levels near CB (Citizens Band) radio antennas to understand radiation exposure in close proximity to these transmitters. The research focused on documenting actual field strengths that CB radio operators and nearby individuals might encounter during typical use.
D. Davidson, J. M. Musser, O. G. Nackoney, D. L. Swank · 1979
This 1979 technical report documented power density measurements around GTE microwave transmitting facilities in Florida. The research measured electromagnetic field levels near telecommunications infrastructure to assess potential exposure levels. This type of field measurement work provided early baseline data for understanding microwave exposure from commercial transmission systems.
Health Council of the Netherlands · 1979
The Health Council of the Netherlands conducted a comprehensive government review in 1979 examining the health hazards associated with microwave radiation exposure. This official assessment evaluated existing research on microwave radiation effects and established recommended exposure limits based on available scientific evidence. The report represents an early institutional recognition of potential microwave radiation health risks.
Q. Balzano, O. Garay, F. R. Steel · 1979
This 1979 technical report by Q. Balzano attempted to measure radiofrequency exposure levels for operators of portable radios operating at 30 MHz. The research used phantom measurements to evaluate power density levels that radio operators experienced during typical use. This represents early efforts to quantify occupational RF exposure from two-way radio equipment.
P. Tuengler, F. Keilmann, L. Genzel · 1979
German researchers exposed enzyme solutions and hemoglobin to millimeter wave radiation (40-115 GHz) at 10 mW/cm² to test for biological effects. They found no detectable changes in enzyme activity or oxygen binding, even with precise frequency scanning. This suggests millimeter waves at these intensities don't directly interfere with basic protein functions.
Robert D. Tucker, Otto H. Schmitt · 1978
Researchers tested over 200 people in more than 30,000 trials to see if humans can consciously detect moderate-strength 60 Hz magnetic fields (7.5-15 gauss). Using a specially designed isolation chamber to eliminate false clues, they found no evidence that people can sense these electromagnetic fields, even with biofeedback training.
M. H. Repacholi · 1978
This 1978 Canadian government paper proposed the first national exposure limits for microwave and radiofrequency radiation, recommending 1 mW/cm² (10 W/m²) for continuous human exposure. The authors argued this limit would protect both workers and the general public while remaining technically feasible for industry compliance.
Ohno, K., Pettigrew, K.D., Rapoport, S.I. · 1978
Researchers exposed rats to 2450 MHz microwave radiation (the same frequency used in microwave ovens and WiFi) for 30 minutes to test whether it damages the blood-brain barrier. They found no changes in the barrier's permeability to sucrose, suggesting this level of microwave exposure doesn't compromise brain protection.
Gideon Kantor, Donald M. Witters, Jr., John W. Greiser · 1978
Researchers in 1978 tested a new microwave diathermy device operating at 2.45 GHz (the same frequency as modern WiFi and microwave ovens) for medical heating therapy. They found the device created uniform heating patterns in tissue phantoms while keeping radiation leakage at 0.8-4 mW/cm² depending on contact distance. The study demonstrated technical feasibility for safe medical microwave applications.
