Access Point Spacing Recommendations - Cisco Aironet 1850 Series Deployment Manual

Revised: January 25, 2017,

Access Point Spacing Recommendations

If you have an Wi-Fi device such as an AP and you are going to use another AP in the vicinity on a different channel, it is recommended
that you space each AP apart by approximately 6 ft (2 meters). Avoid clustering the APs or the antennas from different APs together,
because this could cause degradation in performance. This recommended distance is based on the assumption that both devices operate
in the unlicensed band and do not transmit RF energy more than 23 dB, that is, 200 mW. If higher power is used, space the APs
farther apart.
If you have other devices that transmit, especially if they operate in the same frequency ranges, for example, frequency hopping
legacy APs or other devices that operate close in frequency to those of the AP (think below or above the 2.4 and 5 GHz band), you
should consider moving or separating the devices as far as you can. After you have done this, check for interference by testing both
devices at the same time under heavy utilization (load) and then characterize each system independently to see how much, if any,
degradation exists.
To comply with FCC, EU, and EFTA RF exposure limits, antennas should be located at a minimum of
Warning
7.9 inches (20 cm) or more from the body of all persons. For more information, see the Declarations of
Conformity section in the Cisco Aironet 1850 Series Access Points Hardware Installation Guide.