8,655 Studies Reviewed. 86.9% Found Biological Effects. The Evidence is Clear.
Shield Your Body
Whole Body / GeneralPart of the Glaser Archive

PROPOSED TLV FOR RADIOFREQUENCY RADIATION

Bioeffects Seen

Authors not listed · 1979

Share:

1979 workplace RF safety proposals preceded today's ubiquitous consumer exposures by decades.

Plain English Summary

Summary written for general audiences

This 1979 technical report proposed threshold limit values (TLVs) for radiofrequency radiation exposure in occupational settings. The document addressed workplace safety standards for electromagnetic energy, particularly microwave radiation exposure limits for workers. This represents early efforts to establish science-based exposure guidelines before widespread consumer electronics adoption.

Why This Matters

This 1979 report represents a pivotal moment in RF safety regulation - when occupational health experts first attempted to codify exposure limits for radiofrequency radiation. The science demonstrates that even 45 years ago, researchers recognized the need for protective thresholds against electromagnetic energy exposure in workplace environments. What makes this historically significant is the timing: these early TLV proposals came decades before cell phones, WiFi, and 5G would expose the general population to similar RF frequencies on a continuous basis. The reality is that today's consumer devices often operate at power levels and frequencies that would have required careful monitoring in 1979 occupational settings. Yet current safety standards for the public remain largely based on this era's understanding of RF bioeffects, despite mounting evidence of health impacts at much lower exposure levels than these early occupational limits assumed safe.

Finding

The TLV is based upon that incident microwave energy which would cause no more than a doubling of an individual's basal metabolic rate (BMR).

In their words

“The TLV is based upon that incident microwave energy which would cause no more than a doubling of an individual's basal metabolic rate (BMR).”

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 10 MHz to 300 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 10 MHz to 300 GHzPower lines50/60 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study.

Cite This Study
Unknown (1979). PROPOSED TLV FOR RADIOFREQUENCY RADIATION.
Show BibTeX
@article{proposed_tlv_for_radiofrequency_radiation_g5208,
  author = {Unknown},
  title = {PROPOSED TLV FOR RADIOFREQUENCY RADIATION},
  year = {1979},
  
  
}
No DOI on file for this study.

Quick Questions About This Study

Threshold Limit Values (TLVs) are recommended exposure limits for workplace safety. This 1979 report proposed specific RF radiation levels that workers could be exposed to during an 8-hour workday without adverse health effects, based on available scientific evidence at the time.
In 1979, significant RF radiation exposure primarily occurred in industrial and military workplaces using radar, microwave equipment, and radio transmitters. Consumer electronics with RF emissions were minimal, so workplace exposure represented the main public health concern requiring regulatory attention.
Many consumer devices today operate at RF power levels that would have triggered workplace safety protocols in 1979. Cell phones, WiFi routers, and smart devices expose users to RF radiation continuously, unlike the controlled 8-hour occupational exposures these early limits addressed.
The report addressed radiofrequency and microwave radiation across the electromagnetic spectrum used in industrial applications. This included frequencies used for heating, communications, and radar systems that workers encountered in manufacturing, telecommunications, and military facilities during that era.
Many current RF exposure limits trace back to scientific understanding from this era, focusing primarily on thermal effects from heating tissue. However, decades of research have identified biological effects at much lower exposure levels than these early occupational thresholds considered.