You would be better off using a 2:1 splitter and two antennas connected to the same port. The splitter will cut power to each antenna in half, but you will not pick up 360 degrees of noise, and you can make up for the power loss with higher gain antennas.
One warning, using two grids back to back will create noise - either use yagis, patches, or enough space to avoid stepping on yourself.
It should be noted here if you add a splitter that you will be inducing more loss in your sytem that must inculded in your link budget.
You will also have to get your own system certification through FCC as you have modified the system.
The same goes if you use a non Cisco certified antenna.
From the documentation pages
Caution: The Part 15 radio device operates on a non-interference basis with other devices operating at this frequency when using integrated antennas or those listed in Table B-1. Any changes or modification to the product not expressly approved by Cisco could void the user's authority to operate this device.
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(#)For this reason being that : - application that doesn't use multicast, sends one copy of each packet ( data unit of traffic at layer 3 ) to each client (" who seeks the traffic ).- application that does use multicast, sends ...
Transferring Crash file from standby:
Login to the Active WLC in HA.
(Cisco Controller) >transfer upload datatype crash
(Cisco Controller) >transfer upload filename <Desired filename>
(Cisco Controller) >transfer up...
This is the start of a display filter cross reference between Wireshark and OmniPeek.
The 1st installment is a table of advanced filters. More filters will be added as time allows.
It is a living doc, so check back for changes every so often
Please feel ...