Japan general-environment limit, 30–300 MHz
27.5 V/m, equivalently 0.2 mW/cm² (2 W/m²), across FM, VHF TV and the 150–300 MHz land-mobile bands, averaged over six minutes.
Regulatorygeneral public30–300 MHz
Last verified 12 August 2026.
- Limit value
- 27.5 V/mRegulatory value — legally enforceable — 電波法施行規則 appended table 2-3-2, table 1: E = 27.5 V/m, H = 0.0728 A/m, power flux density 0.2 mW/cm² = 2 W/m². Where several stations transmit at one site, the sum of the squared ratios to each band's value must not exceed 1.sources: japan-radio-law-table
- Quantity
- electric field strength
- Frequency band
- 30–300 MHz
- Population
- general public
- Set by
- Japan Radio Radiation Protection Guidelines (電波防護指針) (Radio Radiation Protection Guidelines 1990/1997; enforced through 電波法施行規則 art. 21-3 and appended table 2-3-2 (as amended 2017))
- Kind
- Regulatory — legally enforceable
- Averaging time
- 6 minutesA measurement must use the same averaging before it can be compared with this value.
Related records
- Japan Radio Radiation Protection Guidelines (電波防護指針)
Japan's radio-wave protection values, made binding by the Radio Law Enforcement Regulations: 27.5 V/m from 30 to 300 MHz and 61.4 V/m above 1.5 GHz for the general environment, six-minute averaged.
Standards & frameworks
- ICNIRP 2020 general public reference level, 400 MHz–2 GHz
Frequency-scaled reference level f/200 W/m², giving 4.5 W/m² at 900 MHz and 9 W/m² at 1800 MHz.
Exposure limits
Sources
- japan-radio-law-table 電波法施行規則 第21条の3 および別表第2号の3の2 — 電波の強度の値 (Radio Law Enforcement Regulations, art. 21-3 and appended table 2-3-2: permitted radio-wave field strengths) — 総務省 電波利用ポータル (Ministry of Internal Affairs and Communications, Japan). regulation, link checked 2026-08-12.
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