Sunday, 1 July 2012

WiFi channels

These days its almost impossible to find a clear channel to put a wireless network, with neighbours using channels 1 and 6, and the house round the back using 11.
But which are the most popular channels? (only 3 or 4 of the 13 available on 2.4GHz are usable in one place as one signal also uses the 2 channels either side, so using channel 9 when next door is on 11 is no better than just sharing the same channel).
The data is from driving around over the last few weeks, using Wigle Android app on my phone.
Channel
1 = 1223
2 = 37
3 = 23
4 = 25
5 = 22
6 = 830
7 = 243
8 = 37
9 = 43
10 = 71
11 = 768
12 = 11
13 = 38
With 802.11g or n systems its possible to have 4 channel spacing so 1,5,9 and 13 can be used. But it looks like most access points still come with the old 1,6 or 11 plan. The large number of systems using channel 7 are mostly BT HomeHubs, why many use 7 I don't know.
12 and 13 weren't in some older equipment as they weren't used in the USA.

1 comment:

Julian Moss said...

I was reading your blog just as I received your WSPR transmission on 10m. Bit of a coincidence!