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RF Field Intensity Measurements in Selected Broadcast Facilities

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John C.H. Wang, Jack M. Linthicum · 1976

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Early 1976 research measured RF radiation at broadcast facilities, documenting occupational exposures decades before cell phones.

Plain English Summary

Summary written for general audiences

This 1976 technical report measured RF field intensity and power density levels at various broadcast facilities. The research documented electromagnetic radiation exposure levels at radio and television stations, providing baseline data for understanding occupational RF exposure in broadcasting environments.

Why This Matters

This study represents early recognition that broadcast facilities create significant RF exposure environments requiring measurement and documentation. In 1976, researchers were already concerned enough about RF field intensity at radio and TV stations to conduct systematic measurements. What makes this particularly relevant today is that broadcast facilities often generate far higher RF levels than the cell towers and wireless devices we worry about in our daily lives. Workers at these facilities face occupational exposures that can be orders of magnitude higher than what you experience from your smartphone. The science demonstrates that understanding these high-exposure environments helps establish the upper bounds of what humans can tolerate, while also highlighting how broadcast infrastructure has been bathing communities in RF radiation for decades.

Finding

The objective of these measurements is to obtain information concerning the highest levels of electromagnetic radiation existing in or near typical transmitting stations licensed by the FCC, particularly in areas where human activity is most likely to be encountered.

In their words

The objective of these measurements is to obtain information concerning the highest levels of electromagnetic radiation existing in or near typical transmitting stations licensed by the FCC, particularly in areas where human activity is most likely to be encountered.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 535-1605 kHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 535-1605 kHzPower lines50/60 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study.

Study Details

The objective of these measurements is to obtain information concerning the highest levels of electromagnetic radiation existing in or near typical transmitting stations licensed by the FCC, particularly in areas where human activity is most likely to be encountered.

RF field intensity measurements were conducted at selected broadcast facilities including television...

Measurements showed power density levels ranging from negligible to 5440 volts/meter at various loca...

The measurements indicate that exposure levels from broadcast facilities are generally well below established safety standards. The data provides a basis for the Commission to determine whether environmental safety hazards due to non-ionizing radiation may exist.

Cite This Study
John C.H. Wang, Jack M. Linthicum (1976). RF Field Intensity Measurements in Selected Broadcast Facilities.
Show BibTeX
@article{rf_field_intensity_measurements_in_selected_broadcast_facilities_g4665,
  author = {John C.H. Wang and Jack M. Linthicum},
  title = {RF Field Intensity Measurements in Selected Broadcast Facilities},
  year = {1976},
  
  
}
No DOI on file for this study.

Quick Questions About This Study

The specific field intensity measurements aren't detailed in available records, but this technical report documented RF power density levels at various radio and television broadcasting stations to assess occupational exposure environments.
Broadcasting facilities generate high-power RF transmissions that create significant electromagnetic field exposures for workers. This research aimed to document actual field intensity levels in these occupational environments for safety assessment.
Broadcast facilities typically generate much higher RF field intensities than cell phones due to their high-power transmitters. Workers at these facilities face occupational exposures significantly above typical consumer device levels.
Based on the technical report scope, measurements were taken at various broadcasting installations including radio and television stations to characterize the range of RF exposure environments in the industry.
Yes, this early documentation of high-power RF environments provides historical context for understanding electromagnetic exposure levels and helps establish baseline data for comparing modern wireless technology exposures.