{
  "input": {
    "eirpWatts": 0.1,
    "metres": 3,
    "frequencyHz": null
  },
  "estimate": {
    "powerDensity": {
      "value": 884.1941282883075,
      "unit": "µW/m²"
    },
    "powerDensitySi": {
      "value": 0.0008841941282883075,
      "unit": "W/m²"
    },
    "electricFieldEquivalent": {
      "value": 0.5771505272172106,
      "unit": "V/m"
    },
    "basis": "computed",
    "formula": "S = EIRP / (4πd²)",
    "assumptions": [
      "Main-beam (boresight) value: exposure off the beam axis is lower, often by one to two orders of magnitude",
      "Free space: no absorption by walls, vegetation or bodies, and no reflection gain",
      "Far field: invalid closer than roughly one wavelength from the antenna",
      "Continuous transmission: a duty cycle below 100% reduces time-averaged exposure proportionally"
    ]
  },
  "comparisons": [
    {
      "limit": "limits:fcc-mpe-occupational-1500-100000",
      "name": "FCC occupational MPE, 1.5–100 GHz",
      "standard": "FCC Maximum Permissible Exposure (47 CFR 1.1310)",
      "kind": "regulatory",
      "population": "occupational",
      "band": "1500–100,000 MHz",
      "limitValue": "50000000 µW/m²",
      "percentOfLimit": 0.0017683882565766149,
      "freeSpaceDistanceToReachMetres": 0.012615662610100801,
      "note": "Compare only against a 6-minute time-average, not a peak reading.",
      "html": "/limits/fcc-occupational-power-density-above-1-5-ghz"
    },
    {
      "limit": "limits:fcc-mpe-public-1500-100000",
      "name": "FCC general population MPE, 1.5–100 GHz",
      "standard": "FCC Maximum Permissible Exposure (47 CFR 1.1310)",
      "kind": "regulatory",
      "population": "general-public",
      "band": "1500–100,000 MHz",
      "limitValue": "10000000 µW/m²",
      "percentOfLimit": 0.008841941282883075,
      "freeSpaceDistanceToReachMetres": 0.028209479177387815,
      "note": "Compare only against a 30-minute time-average, not a peak reading.",
      "html": "/limits/fcc-public-power-density-above-1-5-ghz"
    },
    {
      "limit": "limits:ofcom-public-2-300ghz",
      "name": "UK enforceable general-public limit, 2–300 GHz",
      "standard": "UK Ofcom EMF licence condition",
      "kind": "regulatory",
      "population": "general-public",
      "band": "2–300 GHz",
      "limitValue": "10000000 µW/m²",
      "percentOfLimit": 0.008841941282883075,
      "freeSpaceDistanceToReachMetres": 0.028209479177387815,
      "note": "Compare only against a 30-minute time-average, not a peak reading.",
      "html": "/limits/uk-public-power-density-above-2-ghz"
    },
    {
      "limit": "limits:arpansa-public-2-300ghz",
      "name": "Australian general-public limit, 2–300 GHz",
      "standard": "ARPANSA RPS S-1 (2021)",
      "kind": "regulatory",
      "population": "general-public",
      "band": "2–300 GHz",
      "limitValue": "10000000 µW/m²",
      "percentOfLimit": 0.008841941282883075,
      "freeSpaceDistanceToReachMetres": 0.028209479177387815,
      "note": "Compare only against a 30-minute time-average, not a peak reading.",
      "html": "/limits/australia-public-power-density-above-2-ghz"
    },
    {
      "limit": "limits:brazil-public-2-300ghz",
      "name": "Brazil public limit, 2–300 GHz",
      "standard": "Brazil Anatel RF exposure limits (Ato 17865/2023)",
      "kind": "regulatory",
      "population": "general-public",
      "band": "2–300 GHz",
      "limitValue": "10000000 µW/m²",
      "percentOfLimit": 0.008841941282883075,
      "freeSpaceDistanceToReachMetres": 0.028209479177387815,
      "note": "Compare only against a 6-minute time-average, not a peak reading.",
      "html": "/limits/brazil-public-limit-2-300-ghz"
    },
    {
      "limit": "limits:fcc-mpe-public-300-1500",
      "name": "FCC general population MPE, 300–1500 MHz",
      "standard": "FCC Maximum Permissible Exposure (47 CFR 1.1310)",
      "kind": "regulatory",
      "population": "general-public",
      "band": "300–1500 MHz",
      "limitValue": "2000000 µW/m²",
      "percentOfLimit": 0.04420970641441538,
      "freeSpaceDistanceToReachMetres": 0.063078313050504,
      "note": "Compare only against a 30-minute time-average, not a peak reading.",
      "html": "/limits/fcc-public-power-density-300-1500-mhz"
    },
    {
      "limit": "limits:japan-public-300-1500mhz",
      "name": "Japan general-environment limit, 300 MHz–1.5 GHz",
      "standard": "Japan Radio Radiation Protection Guidelines (電波防護指針)",
      "kind": "regulatory",
      "population": "general-public",
      "band": "300 MHz–1.5 GHz",
      "limitValue": "2000000 µW/m²",
      "percentOfLimit": 0.04420970641441538,
      "freeSpaceDistanceToReachMetres": 0.063078313050504,
      "note": "Compare only against a 6-minute time-average, not a peak reading.",
      "html": "/limits/japan-general-environment-limit-300-1500-mhz"
    },
    {
      "limit": "limits:korea-public-400-2000mhz",
      "name": "Korea public limit, 400–2000 MHz",
      "standard": "Korea EMF human protection standard (전자파 인체보호기준)",
      "kind": "regulatory",
      "population": "general-public",
      "band": "400–2000 MHz",
      "limitValue": "2000000 µW/m²",
      "percentOfLimit": 0.04420970641441538,
      "freeSpaceDistanceToReachMetres": 0.063078313050504,
      "note": "Compare only against a 6-minute time-average, not a peak reading.",
      "html": "/limits/korea-public-limit-400-2000-mhz"
    },
    {
      "limit": "limits:poland-public-400-2000mhz",
      "name": "Poland public limit, 400–2000 MHz",
      "standard": "Poland environmental EMF limits (Dz.U. 2019 poz. 2448)",
      "kind": "regulatory",
      "population": "general-public",
      "band": "400–2000 MHz",
      "limitValue": "2000000 µW/m²",
      "percentOfLimit": 0.04420970641441538,
      "freeSpaceDistanceToReachMetres": 0.063078313050504,
      "note": null,
      "html": "/limits/poland-public-limit-400-2000-mhz"
    },
    {
      "limit": "limits:brazil-public-400-2000mhz",
      "name": "Brazil public limit, 400–2000 MHz",
      "standard": "Brazil Anatel RF exposure limits (Ato 17865/2023)",
      "kind": "regulatory",
      "population": "general-public",
      "band": "400–2000 MHz",
      "limitValue": "2000000 µW/m²",
      "percentOfLimit": 0.04420970641441538,
      "freeSpaceDistanceToReachMetres": 0.063078313050504,
      "note": "Compare only against a 6-minute time-average, not a peak reading.",
      "html": "/limits/brazil-public-limit-400-2000-mhz"
    },
    {
      "limit": "limits:india-public-2-300ghz",
      "name": "India base-station limit, 2–300 GHz",
      "standard": "India DoT base-station EMF norms (1/10th of ICNIRP)",
      "kind": "regulatory",
      "population": "general-public",
      "band": "2–300 GHz",
      "limitValue": "1000000 µW/m²",
      "percentOfLimit": 0.08841941282883076,
      "freeSpaceDistanceToReachMetres": 0.08920620580763855,
      "note": "Compare only against a 6-minute time-average, not a peak reading.",
      "html": "/limits/india-base-station-limit-above-2-ghz"
    },
    {
      "limit": "limits:china-public-30-3000",
      "name": "China public limit, 30–3000 MHz",
      "standard": "China GB 8702-2014 electromagnetic environment control limits",
      "kind": "regulatory",
      "population": "general-public",
      "band": "30–3000 MHz",
      "limitValue": "400000 µW/m²",
      "percentOfLimit": 0.2210485320720769,
      "freeSpaceDistanceToReachMetres": 0.14104739588693907,
      "note": "Compare only against a 6-minute time-average, not a peak reading.",
      "html": "/limits/china-public-limit-30-3000-mhz"
    },
    {
      "limit": "limits:china-public-3-15ghz",
      "name": "China public limit, 3–15 GHz",
      "standard": "China GB 8702-2014 electromagnetic environment control limits",
      "kind": "regulatory",
      "population": "general-public",
      "band": "3000–15,000 MHz",
      "limitValue": "400000 µW/m²",
      "percentOfLimit": 0.2210485320720769,
      "freeSpaceDistanceToReachMetres": 0.14104739588693907,
      "note": "Compare only against a 6-minute time-average, not a peak reading.",
      "html": "/limits/china-public-limit-3-15-ghz"
    },
    {
      "limit": "limits:brussels-outdoor-cumulative",
      "name": "Brussels cumulative limit, publicly accessible outdoor areas",
      "standard": "Brussels-Capital non-ionising radiation ordinance",
      "kind": "regulatory",
      "population": "general-public",
      "band": "400–2000 MHz, outdoors",
      "limitValue": "250400 µW/m²",
      "percentOfLimit": 0.35311267104165633,
      "freeSpaceDistanceToReachMetres": 0.1782698527338514,
      "note": null,
      "html": "/limits/brussels-outdoor-cumulative-limit"
    },
    {
      "limit": "limits:india-public-400-2000",
      "name": "India base-station limit, 400–2000 MHz",
      "standard": "India DoT base-station EMF norms (1/10th of ICNIRP)",
      "kind": "regulatory",
      "population": "general-public",
      "band": "400–2000 MHz",
      "limitValue": "200000 µW/m²",
      "percentOfLimit": 0.4420970641441538,
      "freeSpaceDistanceToReachMetres": 0.19947114020071635,
      "note": "Compare only against a 6-minute time-average, not a peak reading.",
      "html": "/limits/india-base-station-limit-400-2000-mhz"
    },
    {
      "limit": "limits:russia-public-300mhz-300ghz",
      "name": "Russia public limit, 300 MHz–300 GHz",
      "standard": "Russia SanPiN public RF limits",
      "kind": "regulatory",
      "population": "general-public",
      "band": "0.3–300 GHz",
      "limitValue": "100000 µW/m²",
      "percentOfLimit": 0.8841941282883076,
      "freeSpaceDistanceToReachMetres": 0.28209479177387814,
      "note": null,
      "html": "/limits/russia-public-limit-above-300-mhz"
    },
    {
      "limit": "limits:brussels-indoor-cumulative",
      "name": "Brussels cumulative limit, publicly accessible indoor areas",
      "standard": "Brussels-Capital non-ionising radiation ordinance",
      "kind": "regulatory",
      "population": "general-public",
      "band": "400–2000 MHz, indoors",
      "limitValue": "99700 µW/m²",
      "percentOfLimit": 0.8868546923654038,
      "freeSpaceDistanceToReachMetres": 0.2825188884179009,
      "note": null,
      "html": "/limits/brussels-indoor-cumulative-limit"
    },
    {
      "limit": "limits:icnirp-2020-public-2-300ghz",
      "name": "ICNIRP 2020 general public reference level, 2–300 GHz",
      "standard": "ICNIRP 2020 RF guidelines (100 kHz–300 GHz)",
      "kind": "guideline",
      "population": "general-public",
      "band": "2–300 GHz",
      "limitValue": "10000000 µW/m²",
      "percentOfLimit": 0.008841941282883075,
      "freeSpaceDistanceToReachMetres": 0.028209479177387815,
      "note": "Compare only against a 30-minute time-average, not a peak reading.",
      "html": "/limits/icnirp-public-power-density-above-2-ghz"
    },
    {
      "limit": "limits:sc6-public-6-15ghz",
      "name": "Safety Code 6 uncontrolled reference level, 6–15 GHz",
      "standard": "Health Canada Safety Code 6 (2015)",
      "kind": "guideline",
      "population": "general-public",
      "band": "6000–15,000 MHz",
      "limitValue": "10000000 µW/m²",
      "percentOfLimit": 0.008841941282883075,
      "freeSpaceDistanceToReachMetres": 0.028209479177387815,
      "note": "Compare only against a 6-minute time-average, not a peak reading.",
      "html": "/limits/safety-code-6-public-6-15-ghz"
    },
    {
      "limit": "limits:icnirp-2020-public-400-2000",
      "name": "ICNIRP 2020 general public reference level, 400 MHz–2 GHz",
      "standard": "ICNIRP 2020 RF guidelines (100 kHz–300 GHz)",
      "kind": "guideline",
      "population": "general-public",
      "band": "400–2000 MHz",
      "limitValue": "2000000 µW/m²",
      "percentOfLimit": 0.04420970641441538,
      "freeSpaceDistanceToReachMetres": 0.063078313050504,
      "note": "Compare only against a 30-minute time-average, not a peak reading.",
      "html": "/limits/icnirp-public-reference-level-400-2000-mhz"
    },
    {
      "limit": "limits:sc6-public-300-6000",
      "name": "Safety Code 6 uncontrolled reference level, 300–6000 MHz",
      "standard": "Health Canada Safety Code 6 (2015)",
      "kind": "guideline",
      "population": "general-public",
      "band": "300–6000 MHz",
      "limitValue": "1290000 µW/m²",
      "percentOfLimit": 0.0685421804874657,
      "freeSpaceDistanceToReachMetres": 0.0785416847532055,
      "note": "Compare only against a 6-minute time-average, not a peak reading.",
      "html": "/limits/safety-code-6-public-300-6000-mhz"
    },
    {
      "limit": "limits:sbm-2024-rf-extreme",
      "name": "Building Biology SBM-2024 RF band: extreme anomaly",
      "standard": "Building Biology SBM-2024 evaluation guidelines",
      "kind": "precautionary",
      "population": "sensitive",
      "band": "per single RF source, peak",
      "limitValue": "1000 µW/m²",
      "percentOfLimit": 88.41941282883076,
      "freeSpaceDistanceToReachMetres": 2.8209479177387813,
      "note": null,
      "html": "/limits/building-biology-rf-extreme-anomaly"
    },
    {
      "limit": "limits:europaem-2016-wifi-night",
      "name": "EUROPAEM 2016 night-time target value for WLAN and similar pulsed sources",
      "standard": "EUROPAEM EMF Guideline 2016",
      "kind": "precautionary",
      "population": "sensitive",
      "band": "pulsed digital services",
      "limitValue": "10 µW/m²",
      "percentOfLimit": 8841.941282883075,
      "freeSpaceDistanceToReachMetres": 28.209479177387816,
      "note": null,
      "html": "/limits/europaem-target-value-wlan-night"
    }
  ],
  "caveat": "A boresight free-space upper bound, not a measurement. Off-axis exposure is typically one to two orders of magnitude lower, duty cycle reduces the time average that regulatory limits are written against, and the formula is invalid within roughly one wavelength of the antenna."
}