Internal Meshbed using MP AWD - disabling MIMO

[Om Shree]

Hello,

I've been trying to setup an internal testbed using the new MP-AWD devices in a very constricted space. 

I am using self-built Faraday cages to cancel the interference. The cage is basically wire mesh with hole spacing of less than 3mm, wrapped around the MP-AWD boxes. 

In order to further cancel interference, I would like to disable the MIMO feature, which is enabled on the 5GHz radio for mesh backbone, by disconnecting the IPEX link to RP-SMA connectors. 

For the testbed, I do not require the MIMO feature. I want to use the other for the 2.4 GHz AP radio. 

My questions are; 

a) will disconnecting one of the IPEX connectors disable MIMO?

b) do I need to make some changes in the SECN configurations to disable MIMO besides disconnecting? 

Thank you in advance

[T Gillett]

Hi OM

Just to clarify, there are two radios in the AWD device.

The Primary radio is 2.4GHz  1T1R,  and the Secondary radio is 2.4/5GHz  2T2R.

Is your requirement to switch off the Secondary radio and just use the Primary radio?

Or is your requirement to operate both radios, with the Secondary radio operating as 1T1R (ie in a non-MIMO mode)?

Terry

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[Om Shree]

Hello Terry,

My requirements are to use both radios, but  with the Secondary radio operating as 1T1R (non-MIMO) mode. 

[T Gillett]

Hi Om

To disable 'n' operation, set the HT Mode for the radio to 'NONE'

From the OpenWrt Wiki:
    https://wiki.openwrt.org/doc/uci/wireless

htmode
Specifies the channel width in 802.11n and 802.11ac mode, possible values are:
HT20 (single 20MHz channel),
HT40- (2x 20MHz channels, primary/control channel is upper, secondary channel is below)
HT40+ (2x 20MHz channels, primary/control channel is lower, secondary channel is above).
HT40 (2x 20Mz channels, auto selection of upper or lower secondary channel on versions 14.07 and above).
NONE (disables 802.11n rates and enforce the usage of legacy 802.11 b/g/a rates)

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[Om Shree]

Much thank you Terry.

On Monday, April 3, 2017 at 4:33:03 PM UTC+2, Om Shree wrote: