Allnet ALL0271 range problems

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I've been using a PrismGT card in my laptop for a while (using the prism54 
drivers) and my desktop has been running an SMC2802Wv2 with the 
ndiswrapper drivers in ad-hoc mode.  I just bought a Allnet ALL0271 card 
from Germany to replace the SMC so I could use the Prism54 drivers on both 
machines, but I've hit a problem:

I get a 54Mb connection between the two machines at a range of about a 
metre, but the signal quickly drops off - by the time I get into the next 
room (a range of about 4 metres through a single plasterboard wall) I'm 
getting a large number of dropped packets making the connection completely 
unusable.  The Allnet card with prism54 drivers also seems to have a habit 
of hanging my desktop.

Am I missing something (I've tried tweaking the tx-power setting but it's 
already set at 31 which appears to be the highest setting), or is this 
card broken?

- -- 

 - Steve         Jabber: [email protected]     Web: http://www.nexusuk.org/

     Servatis a periculum, servatis a maleficum - Whisper, Evanescence

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