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NZFoxnet
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10mhz Channels & R52N

Mon Aug 03, 2009 5:09 am

Is anyone else having trouble with 10mhz channels and the r52N?

I have tried all the combinations I can think of but I can not get any station to see a 10mhz ap. At first I thought it was due to a difference between cards and ROS versions. But even using a clean setup of 4.04 on both ends with 411's and a r52N cards I could not get the station to see or associate with a 10mhz channel. 20mhz and .11n is fine.

Mike
 
hytanium
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Re: 10mhz Channels & R52N

Fri Dec 18, 2009 4:08 am

Any progress on getting this issue fixed?
 
MyThoughts
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Re: 10mhz Channels & R52N

Sun Jan 03, 2010 8:32 pm

Small channel sizes (5 MHz & 10 MHz), and large channels (40 MHz Turbo) were all features specific to Atheros radio cards. Mikrotik implemented support for these features as users demanded it.

However, Atheros has not produced a new radio chip that features the small channel ability and 802.11n features, until they do this there is nothing Mikrotik can do.

I have emailed Atheros, and Ubiquiti on the matter to find out if Atheros is even going to continue pursuing small channel. I have yet to hear back but considering that this feature is pretty much solely used in special cases (WISPS, PtP equip, etc.), my feeling is they will be abandoning it.

802.11n should have incorporated the ability to use small channels in its design, IMHO this is a huge design flaw that will rear its ugly effects as more people start using wireless in high population density areas.

Cheers
 
hytanium
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Re: 10mhz Channels & R52N

Sun Jan 03, 2010 8:34 pm

This is unfortunate. Using small channels allows us to have more sites in sectorized senarios... it is also easier to steer around interferance.

Thanks for the info.
 
dingsingo
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Re: 10mhz Channels & R52N

Tue Mar 23, 2010 11:57 am

Hi,

is this Problem fixt ? I've testet R4.6 with R52Hn. Other side is R5H R4.6.

20Mhz by 802.11a works fine by ~30dB signal. When we goes to 10Mhz Channel, the Link didn't work.


Dingsingo
 
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Re: 10mhz Channels & R52N

Wed Apr 07, 2010 7:51 pm

Hi there... so it's normal that i cannot use 5ghz-turbo with r52n or i miss something?

regards.

RG
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infowest
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10Mhz channels broken in newer 4.x versions

Mon May 17, 2010 5:36 pm

We had 10mhz channels running fine in 4.4 for months, but they broke in 4.9.

I don't think it's a R52N problem, it's a RouterOS problem.

We just downgraded back to 4.4 and our customers came back up.

Let's get this fixed!
 
MyThoughts
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Re: 10mhz Channels & R52N

Fri Jun 18, 2010 1:13 am

I was mistaken about the small channel support (5 Mhz and 10 MHz), turns out it is present on the atheros 11n chipset.

Router OS v5.0b3 has fixes for those channel sizes.

Cheers

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