# How far should you live from a cell tower?

> No authority defines a setback distance; beam geometry dominates, and measured residential levels are hundreds of times below limits. Look up the structure and measure.

- Canonical URL: https://emfbase.com/questions/how-far-should-i-live-from-a-cell-tower
- Collection: Direct answers
- Record id: `questions:how-far-should-i-live-from-a-cell-tower`
- Status: verified
- Last verified: 2026-08-12
- JSON: https://emfbase.com/api/questions/how-far-should-i-live-from-a-cell-tower
- Also known as: safe distance from cell tower, how close is too close to a 5G tower

## Key values

- **Topic:** distances

## Question

What is a safe distance from a cell tower or 5G mast?

## Answer

No health authority specifies a safe setback distance, because exposure depends far more on the antenna's height, azimuth and downtilt than on horizontal distance — levels directly beneath a tower are usually lower than a few hundred metres away, where the main beam reaches the ground. Measured residential exposures near base stations are typically hundreds to thousands of times below regulatory limits, according to ARPANSA and comparable regulators. If you want a defensible answer for a specific property, look the structure up in the FCC ASR database, work out the elevation angle to the antenna, and measure with a directional antenna rather than relying on a distance rule of thumb.

## Related records

- [Macro cell tower (LTE / 5G sector antenna)](https://emfbase.com/emitters/cell-tower): Sector antennas radiate on the order of 1000 W EIRP per sector on the main beam, which is aimed above and away from the tower base — ground-level exposure directly beneath a tower is usually lower than at a few hundred metres away.
- [Identifying a nearby tower from public records](https://emfbase.com/protocols/tower-lookup): How to establish what is actually on a mast — height, azimuth, licensee — from the FCC Antenna Structure Registration and licence databases before estimating exposure.
- [EIRP / ERP](https://emfbase.com/glossary/eirp): Transmitter power multiplied by antenna gain: the figure that, with distance, determines free-space power density.

## Sources

- `arpansa-base-stations` Australian Radiation Protection and Nuclear Safety Agency. *Mobile phone base stations and health*. https://www.arpansa.gov.au/understanding-radiation/radiation-sources/more-radiation-sources/mobile-phone-base-stations — government, link checked 2026-08-12
- `fcc-oet65` Federal Communications Commission, Office of Engineering and Technology (1997). *OET Bulletin 65: Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields*. https://www.fcc.gov/general/oet-bulletins-line — government, link checked 2026-08-12
- `fcc-asr` Federal Communications Commission. *Antenna Structure Registration (ASR) public access database downloads*. https://www.fcc.gov/wireless/data/public-access-files-database-downloads — government, 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.