# Brazil public limit, 400–2000 MHz

> f/200 W/m² (f in MHz) by legal adoption of ICNIRP — 4.5 W/m² at 900 MHz — enforced by Anatel through station licensing since 1 March 2024.

- Canonical URL: https://emfbase.com/limits/brazil-public-limit-400-2000-mhz
- Collection: Exposure limits
- Record id: `limits:brazil-public-400-2000mhz`
- Status: verified
- Last verified: 2026-08-12
- JSON: https://emfbase.com/api/limits/brazil-public-limit-400-2000-mhz

## Key values

- **Limit value:** 2,000,000–1 × 10^7 µW/m² — Regulatory value — legally enforceable — Brazil does not set an independent numerical value: Lei 11.934/2009 adopts the limits recommended by the WHO, and Ato 17.865/2023 puts the ICNIRP values in force in Anatel's technical requirements. The range is the band edges, 2 W/m² at 400 MHz to 10 W/m² at 2000 MHz. [brazil-anatel-ato-17865, brazil-lei-11934]
- **Quantity:** power density
- **Frequency band:** 400–2000 MHz
- **Population:** general public
- **Set by:** Brazil Anatel RF exposure limits (Ato 17865/2023) (Lei nº 11.934/2009; Resolução nº 700/2018; Ato nº 17.865 of 30 December 2023, in force 1 March 2024)
- **Kind:** Regulatory — legally enforceable
- **Averaging time:** 6 minutes — A measurement must use the same averaging before it can be compared with this value.
- **Frequency-dependent formula:** f/200 W/m², E = 1.375 √f V/m (f in MHz)

## Related records

- [Brazil Anatel RF exposure limits (Ato 17865/2023)](https://emfbase.com/standards/brazil-anatel-emf-limits): Brazil legislates by reference: Lei 11.934/2009 adopts the WHO-recommended limits, and Anatel's Ato 17865/2023 put the ICNIRP 2020 values in force for 8.3 kHz–300 GHz from 1 March 2024.
- [ICNIRP 2020 general public reference level, 400 MHz–2 GHz](https://emfbase.com/limits/icnirp-public-reference-level-400-2000-mhz): Frequency-scaled reference level f/200 W/m², giving 4.5 W/m² at 900 MHz and 9 W/m² at 1800 MHz.

## Sources

- `brazil-anatel-ato-17865` Agência Nacional de Telecomunicações (Anatel), Brazil (2023). *Ato nº 17.865, de 30 de dezembro de 2023 — limites de exposição a CEMRF entre 8,3 kHz e 300 GHz, adotando as recomendações ICNIRP 2020*. https://informacoes.anatel.gov.br/legislacao/atos-de-requisitos-tecnicos-de-gestao-do-espectro/2023/1914-ato-17865 — regulation, link checked 2026-08-12
- `brazil-lei-11934` Presidência da República (Brazil), via Anatel (2009). *Lei nº 11.934, de 5 de maio de 2009 — limites à exposição humana a campos elétricos, magnéticos e eletromagnéticos até 300 GHz*. https://informacoes.anatel.gov.br/legislacao/leis/426-lei-11934 — regulation, link checked 2026-08-12

Data licence: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Dataset version 2026.08.1. Retrieved from EMFBase, https://emfbase.com.

This record is reference data, not medical or legal advice. Regulatory limits, scientific guidelines and precautionary values are labelled separately and answer different questions.