Channel Size

Hammy · Fri May 27, 2005 9:00 pm

Can I select the size of the channel in N-Streme other than turbo\non-turbo?

Hammy · Mon Jun 13, 2005 4:49 am

*bump*

stephenpatrick · Mon Jun 13, 2005 11:54 am

AFAIK Nstreme is a software protocol, not a function of the wireless card modulation or rate.
So you need to set the wireless card to optimum performance for your application/installation, then Nstreme sits on top "improving" things above the normal 802.11

Do note, Nstreme works well on high quality signals, on weak or noisy ones it can make things worse.

Regards

Hammy · Mon Jun 13, 2005 6:38 pm

I was looking at the potential of using this in the 4.9 Ghz public safety band, which has smaller channels.

I've never actually used much of MT, none of the wireless so pardon my lack of knowing things.

So I can set channel size and a bunch of other settings, and then turn on N-Streme and it runs on top of the existing settings?

stephenpatrick · Mon Jun 13, 2005 10:19 pm

Well MT doesn't tell you the channel size, so you'd have to look up the chipset specs for different data rates, nail the wireless to those bands only, not allowing any others.
Then sure Nstreme should run on top ...

Regards

Hammy · Mon Jun 13, 2005 10:33 pm

Doesn't N-Streme only work with certain Atheros chipsets anyway? Looking for 5 MHz and 10 MHz channel size with N-Streme.

stephenpatrick · Mon Jun 13, 2005 11:04 pm

I have used it with CM6 EM9 and CM9, works fine
(I think that's 5211, 5212 and 5213 - others might want to correct me)

Regards

Hammy · Mon Jun 13, 2005 11:07 pm

Well right, but if it only works with certain chipsets, and it's required of the chipset to set channel size, then we can look at a CM9 to see if it can change channel size. Can it?

jarosoup · Tue Jun 14, 2005 3:09 am

Does Mikrotik have support for this frequency? Most of the 4.9 stuff available right now is very immature.

Hammy · Tue Jun 14, 2005 3:13 am

That's what I am trying to develop. The Atheros cards can operate there, I'm just trying to determine if Ic an get MT to work there.

lastguru · Tue Jun 14, 2005 11:28 am

Surely they do work on 4.9. RouterOS with Atheros cards had support for this for ages (well, maybe for a year or two). And about that bandwidth - nominally (according to standard) it is 20MHz on 5GHz, but no card is perfect (and the magnitude of imperfectness varies from manufacturer to manufacturer, and from card to card), and make more or less high noise on more than 10MHz above and below the base frequency.

jarosoup · Tue Jun 14, 2005 5:16 pm

We would love to use Mikrotik for public safety...we're not very happy with some of the other vendors (which, to be fair, are still in beta stages). Can you (Mikrotik) supply a 4.9 frequency license? As for bandwidth, we've seen some gear that allows selecting between 50, 20, and 10MHz widths. Thanks for bringing this up Hammy

Channel Size

Channel Size

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