On Sat, 10 Jan 2015, Bruno Randolf wrote:
On 01/10/2015 08:38 PM, David Lang wrote:
I would not expect to find consumer hardware that had two radios on the
2.4GHz band, the problems that you would run into trying to keep the
output of one radio from deafening the other (if not outright popping
the receiver amps) would be significant (to say the least). It could be
done, but it would take antenna setups that you just don't see mass
produced to even get started.
Right, that is a good explanation why no consumer HW with this feature
exists.
Even the "enterprise" grade hardware that has multiple radios tends to
have problems with this. It takes having very directional antennas to
try and keep as much of the signal away from the other radio to even start.
Hmm... Yes antenna placement is important and difficult, but I know
setups where this works quite well. E.g. using RouterStation Pro with 3
MiniPCI cards (ath5k/ath9k).
What is it that you are trying to accomplish?
For one part I'm trying to find alternatives to that RouterStationPro
board which is EOL.
But in the current case I actually want to have one or more radios in
monitor mode (running "horst", switching thru channels) and another one
for connectivity (mesh). In this case the interference problems you
mention don't exist, but I admit that this is not a very usual
use-case... ;)
In that case you re probably best off adding a USB wifi interface to a router.
In terms of antennas, try going with high-gain omnidirectional antennas and
position them directly above each other (omnidirectional antennas have a 'blind
spot' directly above and below the antenna, so if you position them so that each
is in the blind spot of the other you have the best chance of it working, and
high gain antennas are going to have flatter patterns, making them more
forgiving)
David Lang
_______________________________________________
openwrt-devel mailing list
openwrt-devel@lists.openwrt.org
https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel
