IEEE 802.11 Spectrum Planner
Visualize interference in the 2.4GHz/5GHz bands. Plan non-overlapping access point coverage for enterprise wireless deployments.
The Physics of WiFi
WiFi Channels are segments of the radio frequency spectrum allocated for data transmission. In the 2.4GHz band, channels are spaced 5MHz apart but are 20MHz wide, meaning they overlap significantly.
Non-Overlapping Rule: For a stable 2.4GHz network, only channels 1, 6, and 11 should be used. Using any other channel causes co-channel interference (CCI) or adjacent-channel interference (ACI), which leads to packet loss and high latency.
5GHz Band: This band offers much more bandwidth and many more non-overlapping channels (e.g. 36, 40, 44, 48), making it superior for dense enterprise environments.