Continous Preamble DoS?

I recently came across this driver that allows the Linksys WCF54G card 
to support wireless sniffing from WM5. Typical stuff...except then I 
noticed something called ' Continuous preamble mode ', which I had never 
heard before...

I asked the creator about it and this was his response:
Primary I needed WM5.0 driver for WCF54G card.
Driver was written with Linux similar driver sources information.
In these sources I found continuos preamble debug option.
I had only mode Name and Comments...

Possible GPL issues aside, when I enable this mode my network goes down. 
However, no packets are detected using Airmagnet, Wireshark, or any 
other program. AirPCap does pickup something...but it is like random data.

I used an RF analyzer to see if it was doing something odd and sure 
enough, when I enabled the mode I saw a HUGE spike in RF around channel 
6 (current channel) and then a constant RF emission from then on spread 
across the entire 2.4 range.

Has anyone seen anything like this or know what it could be or why it 
exists?

Thanks
Seth