On 09/07/13 20:09, Tim Green wrote:
Another advantage of 5GHz: more channels! If you have an Android device then I can recommend the free app inSSIDer which can help you map the 13 channels around 2.4GHz and the dozens and dozens around 5GHz. https://play.google.com/store/apps/details?id=net.metageek
The phones are Android (well CM10) but I don't use Google and I can't see inSSIDer on f-droid. I've this app https://f-droid.org/repository/browse/?fdid=net.wigle.wigleandroid but I'm not sure whether it doesn't do 5GHz or there's no 5GHz kit near me yet.
I rather missed that there were more channels in 5GHz, so thanks for pointing that out. I got confused by there only being two 802.11n channels possible in 2.4GHz (if I've read it correctly). At 5GHz, there are 19 or 24 channels, depending on whether the ones labelled "Short Range Devices" are useful. In theory, optimum channel selection should be a four-colour map-colouring problem (is that right?), so 19 channels should be plenty even with overlapping.
It looks like Dynamic Frequency Selection may be a useful advantage too.
Now I'm just rather surprised that there seems to be some "n" access points on sale that only do 2.4GHz, but I'll try to avoid them.
Thanks,