[Madwifi-devel] XR2 and XR5 performance difference

[LAMBA J. <Jai...@al...>]

I have two XR2 radios close to each other on one PCI board. With this
setup I am seeing a throughout of 30 Mbps combined from two radios
(which should be around 60Mbps). If I switch the radios with XR5 I start
seeing 60 Mbps throughput. 

XR2 + XR2 + antennas == 30 Mbps (should be around 60 Mbps)
XR5 + XR5 + antennas == 60 Mbps
XR2 + XR2 + cable on radio pair == 60 Mbps.

Can somebody please suggest some pointers to debug this problem with two
XR2. 
 
I am using trunk madwifi (r4022) and the interfaces are configured for
adhoc mode with minstrel rate control algorithm. I suspect interference.
 
Any suggestions are welcome.
 
Regards,
Jaideep