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-   -   which wifi channel and what are goods reasons to pick one (http://www.linuxquestions.org/questions/linux-networking-3/which-wifi-channel-and-what-are-goods-reasons-to-pick-one-854427/)

SaintDanBert 01-05-2011 02:28 PM

which wifi channel and what are goods reasons to pick one
 
I ought to understand the radio aspects of wifi better than I do.
(Reading suggestions anyone?) That said, is there a bad-good-best choice for wifi access point channel number? How does one select a channel number systematically (scientifically) rather than trial and error?

Merci d'avance,
~~~ 0;-Dan

misconfiguration 01-05-2011 04:05 PM

This may not be a scientific answer; albeit I simply fire up an arbitrary WiFi scanning tool and search for the channel with less noise, once I find one - it's what I use.

eSelix 01-05-2011 06:29 PM

Most cheap wifi devices have better parameters in the middle of band. In 2,4 GHz this is channel 6. Recently we get simple spectrum analyzer which can help with selection of the best channel.

solar_64131 01-05-2011 09:36 PM

Generally, channel 6 is a good choice. It is only when you are using more than one wireless router (an extended server set) that this becomes a major issue. If that is the case, you should use the channels 1, 6 and 11, where 6 does not overlap with other channel 6s, 11 other 11s, etc.

EDIT: I think the default is channel 6 on most APs, so if you are having noise trouble, you may try 1 or 11.

SaintDanBert 01-06-2011 03:22 PM

My access point supports two bands 2.4 and 5.0 MHz (I think).
I see channel lists for 1 to 11. Other lists for 1 to 15. I also see channels up into the high 100's.

Where does one find a definitive list saying: channel number vs. frequency?

Not every device can operate with all of these various channel numbers.

The wifi app on my 'droid phone shows a histogram of channel vs. signal "bars". The "recommended" channel number keeps hopping around. Why? What can I do to find and use something near optimal? I have all sorts of bluetooth and radio remote (A/V) devices -- not to mention light dimmers and other noise makers.

Thanks,
~~~ 0;-Dan


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