placement of 3 cards on a PC box

[Mustafa C. Kuscu]

Is the loss due to interference? If so, why is that, especially when the 
cards are supposed to operate on non-overlapping channels?

I am wondering if it is because of something like coupling among 
hardware. Denis's post gives a hint but I am not sure..

Denis's post:   
http://sisyphus.iocaine.com/pipermail/hostap/2004-April/006210.html

Jim Thompson wrote:

> 40dB of loss in the first meter.