Sanjeev Sabhlok's notes on technology, hardware, gardening

Wifi settings – mode, channel, bandwidth

This is a comprehensive article: 10 Tips To Fix – WiFi Connected But No Internet Access

Read this: and this (from tpg)

Bandwidth Channel Mode
2.4 Ghz 20 Mhz Auto 802.11g/n  This ensures that pre-2009 adapters (like the one in the ground floor) can receive 2.4 Ghz signals.
5 Ghz 40 Mhz 149 802.11ac/n

If you use 802.11n with 20MHz channels, channels 1, 5, 6, and 11 – I think best is to set to auto

MODES OF 802.11

My router has FIVE modes: 802.11 a/ac/b/g/n.

a and b were released in 1999, g in 2003, n in 2009, and ac in 2013 (ac builds on n).

a/ac/n use the 5 GHz band.  b/g/n use 2.4 GHz band. Thus n is common to both.

BE AWARE THAT OLD ADAPTERS CANNOT RECEIVE n. SO YOU NEED TO SET UP APPROPRIATE LEGACY MIXTURE 

===DETAILS==

BANDWIDTH: The wider the channel, the more you can get out of it. For maximum range, use 20 MHz, for maximum bandwidth use 80 MHz channels. i.e. 2.4 Ghz has a lower max speed but provides more distance whereas the  5 Ghz has higher max speeds but covers less distance.

CHANNEL: This is not a great article, but tolerable starting point How to Boost Your Wi-Fi Speed by Choosing the Right Channel  (

 

 

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