Do your devices have trouble connecting to your 5GHz WiFi? Here’s the fix.
Most WiFi routers routers these days broadcast in both 2.4GHz and 5GHz, the latter giving you much better speeds. However, we’ve found that quite a few devices (some mobile phones, internet TV boxes, tablets, etc.) can have trouble either finding the 5GHz network, connecting to it, or staying connected.
The problem is caused by Dynamic Frequency Selection (DFS). This where the router broadcasts the 5GHz WiFi network over certain channels (52-64 and 100-140) in order to separate the broadcast from conflicting frequencies. Some devices (especially those which are not DFS certified) will struggle to connect to these channels.
Fortunately, the solution is simple. Log in to your router admin console using a browser and find the 5GHz settings page. If the router is set to “Auto” or a DFS channel, change the channel selection to channels 36-48 or 149-165 (or just pick a channel number within one of these ranges). Click Apply, save and exit.
Now rescan the network from each troublesome device and you’ll see the 5GHz option. Bingo.