RF Safe

[Exposure to VHF and UHF electromagnetic fields among workers employed in radio and TV broadcast centers. I. Assessment of exposure].

Medycyna pracy · 2001 · No effect · Insufficient evidence

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No effectInsufficient evidencePaper 3907

A method for retrospective estimation of exposure dose was described and applied to three typical RTCN. The analysis indicated workers were exposed primarily to VHF and UHF electromagnetic fields, and the exposure was considered admissible and therefore not e…

Study snapshot

PublicationMedycyna pracy · 2001
Study typeexposure_assessment
Reported directionNo effect
Evidence ratingInsufficient

Abstract

Nowadays, radio and television have become one of the areas of the human technical activity that develops most rapidly. Also ultra-short waves of VHF (30-300 MHz) and UHF (0.3-3 GHz) bands have proved to be the most important carriers of radio and TV-programs. In Poland, a network of radio and TV broadcast centers (RTCN) with high (over 200 m) masts was set up in the 1960s and 1970s. These centers concentrate the majority of stations broadcasting national and local programs (for areas within the RTCN range). At present, the RTCN established several decades ago are equally important. The assessment of the exposure to electromagnetic fields among workers of multi-program broadcast stations is complicated and feasible only to a certain degree of approximation because of changing conditions of exposure in individual stations during their long history, resulting from the changing numbers and types of transmitters installed. In this work, the method of retrospective estimation of exposure dose is described, and the results of the assessment carried out at three kinds of typical RTCN are discussed. The results of the analysis indicate that the workers of RTCN are exposed primarily to electromagnetic fields of VHF and UHF bands, but this exposure may be considered as admissible, hence it should not exert an adverse effect on the workers' health.

Machine Enhanced Logic

AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeexposure_assessment
Effect directionno_effect
PopulationWorkers employed in radio and TV broadcast centers (RTCN) in Poland
Sample sizeNot supplied
ExposureVHF/UHF
Evidence strengthInsufficientConfidence: 66% · Peer reviewed: yes

Main findings

A method for retrospective estimation of exposure dose was described and applied to three typical RTCN. The analysis indicated workers were exposed primarily to VHF and UHF electromagnetic fields, and the exposure was considered admissible and therefore not expected to adversely affect workers' health.

Outcomes measured

  • Retrospective estimation of electromagnetic field exposure dose among broadcast-center workers
  • Assessment of whether exposure is admissible (within limits)

Limitations

  • Exposure assessment described as complicated and only feasible to an approximate degree due to changing exposure conditions over time (changing numbers/types of transmitters)
  • No quantitative exposure metrics (e.g., field strengths, SAR) reported in the abstract
  • Sample size and measurement details not provided in the abstract
View raw extracted JSON
{
  "study_type": "exposure_assessment",
  "exposure": {
    "band": "VHF/UHF",
    "source": "occupational (radio/TV broadcast centers)",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "Workers employed in radio and TV broadcast centers (RTCN) in Poland",
  "sample_size": null,
  "outcomes": [
    "Retrospective estimation of electromagnetic field exposure dose among broadcast-center workers",
    "Assessment of whether exposure is admissible (within limits)"
  ],
  "main_findings": "A method for retrospective estimation of exposure dose was described and applied to three typical RTCN. The analysis indicated workers were exposed primarily to VHF and UHF electromagnetic fields, and the exposure was considered admissible and therefore not expected to adversely affect workers' health.",
  "effect_direction": "no_effect",
  "limitations": [
    "Exposure assessment described as complicated and only feasible to an approximate degree due to changing exposure conditions over time (changing numbers/types of transmitters)",
    "No quantitative exposure metrics (e.g., field strengths, SAR) reported in the abstract",
    "Sample size and measurement details not provided in the abstract"
  ],
  "evidence_strength": "insufficient",
  "confidence": 0.66,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "occupational exposure",
    "broadcast centers",
    "radio",
    "television",
    "VHF",
    "UHF",
    "retrospective exposure assessment",
    "Poland"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.9,
      "reason": "Focuses on EMF exposure assessment among workers in radio/TV broadcast centers."
    }
  ]
}
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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: Not supplied
PubMed: 11828845

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