# China public limit, 3–15 GHz

> f/7500 W/m² (f in MHz), so 0.47 W/m² at 3.5 GHz and 0.77 W/m² at 5.8 GHz — the band that covers 5G mid-band and 5 GHz Wi-Fi.

- Canonical URL: https://emfbase.com/limits/china-public-limit-3-15-ghz
- Collection: Exposure limits
- Record id: `limits:china-public-3-15ghz`
- Status: verified
- Last verified: 2026-08-12
- JSON: https://emfbase.com/api/limits/china-public-limit-3-15-ghz

## Key values

- **Limit value:** 400,000–2,000,000 µW/m² — Regulatory value — legally enforceable — GB 8702-2014 Table 1: E = 0.22 √f V/m and Seq = f/7500 W/m² from 3–15 GHz, then a flat 27 V/m and 2 W/m² from 15–300 GHz. The range is the band edges: 0.4 W/m² at 3 GHz to 2 W/m² at 15 GHz; 0.467 W/m² at 3500 MHz. [china-gb-8702]
- **Quantity:** power density
- **Frequency band:** 3000–15,000 MHz
- **Population:** general public
- **Set by:** China GB 8702-2014 electromagnetic environment control limits (GB 8702-2014, effective 1 January 2015)
- **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/7500 W/m² (f in MHz)

## Sources

- `china-gb-8702` Ministry of Ecology and Environment of the People's Republic of China (2014). *GB 8702-2014 电磁环境控制限值 (Controlling limits for electromagnetic environment)*. https://www.mee.gov.cn/ywgz/fgbz/bz/bzwb/hxxhj/dcfsbz/201410/t20141022_290449.htm — 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.