[WLANware] 802.11n hardware recommendations

[Dennis Bartsch]

Hello Mike,

> From: mikeofmanchester at gmail.com
[...]
> I'm looking to try and establish a new Freifunk 802.11n network using
> both 2.4GHz and 5GHz and was considering the Linksys wrt610n.  As far
> as I can see OpenWRT should run fine on it:

maybe openwrt run fine on it regarding basic functionality. but broadcom 
(the manufacturer producing all the essential chips in this device) follows 
quite open-source / free-software unfriendly information policy. at least in 
the past. thats why not so many people are fond of hacking these drivers. 
But there are also technical reasons agains this chipset-platform and the 
wrt610n in special: the cpu is clocked rather slow (300MHz), the antennas 
are all build in and thus not detachable/replacable (something you most 
probably want to have when going outdoor) and finally there is simply a 
better platform: Atheros AR9130x WiSoC or AR71xx CPU mit discrete radio 
interfaces. why?:
- it is faster: 400MHz-680MHz CPU clock (depending on the device)
- the ath9k driver for the radio develops very quickly and freifunk near 
persons are having a close look on meshing performance in future (after 
basic functionality works to satisfaction)
- it used in the top price/performance outdoor-devices from eg. ubiquiti

>[...]
> Anyone have any results with 802.11 dual band equipment?

see above

> Any indicative throughput?  

with ath9k and at indoor scenario I got about 60MBit (2,4GHz) to 125Mbit 
(5GHz). But ath9k is developing in terms of performance. But take into 
account: in adhoc mode there is no support for 11n rates for the moment. 
but this is to come. for now you have to stick with a/b/g rate set.

> I will be testing out a mesh of about 10 nodes
> all within relatively close range of each other.

will this close range be permanent or will it just be  a testing enviroment?

>  [...]
> Cheers,
> 
> -Mike

Regars
Dennis

 		 	   		  
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