# 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.

- Canonical URL: https://emfbase.com/limits/icnirp-public-reference-level-400-2000-mhz
- Collection: Exposure limits
- Record id: `limits:icnirp-2020-public-400-2000`
- Status: verified
- Last verified: 2026-08-12
- JSON: https://emfbase.com/api/limits/icnirp-public-reference-level-400-2000-mhz

## Key values

- **Limit value:** 2,000,000–1 × 10^7 µW/m² — Guideline value — scientific recommendation — 2 W/m² at 400 MHz rising to 10 W/m² at 2000 MHz; 4,500,000 µW/m² at 900 MHz. [icnirp-2020]
- **Quantity:** power density
- **Frequency band:** 400–2000 MHz
- **Population:** general public
- **Set by:** ICNIRP 2020 RF guidelines (100 kHz–300 GHz) (2020)
- **Kind:** Guideline — scientific recommendation
- **Averaging time:** 30 minutes — A measurement must use the same averaging before it can be compared with this value.
- **Frequency-dependent formula:** f/200 W/m² (f in MHz)

## Sources

- `icnirp-2020` International Commission on Non-Ionizing Radiation Protection (2020). *Guidelines for Limiting Exposure to Electromagnetic Fields (100 kHz to 300 GHz)*. https://www.icnirp.org/en/publications/article/rf-guidelines-2020.html — guideline, link checked 2026-08-12
- `eu-1999-519` Council of the European Union (1999). *Council Recommendation 1999/519/EC on the limitation of exposure of the general public to electromagnetic fields (0 Hz to 300 GHz)*. https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A31999H0519 — 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.