Re: Is it possible to decrease the Transmission power in D-link DWL 650 with hostap installed on linux

From: Jouni Malinen (jkmaline_at_cc.hut.fi)
Date: 2002-06-19 18:23:31 UTC

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On Wed, Jun 19, 2002 at 02:13:23PM -0300, Carlo Pires wrote:

> Is the hostap driver capable to determine the maximum tx power card ?

No. Prism2's baseband processor has a register, CR58 (TX power measurement), that might give some indication about the real TX power. However, I haven't yet studied how it would be mapped to some useful values.

> What I would happen if I set for 20dBm and the maximum of the card will
> be 13dBm ?

20 dBm (in iwconfig wlan0 txpower) is mapped to the maximum value for BBP's CR31 (Manual TX Power Control) and in this case it would really be 13 dBm.

-- 
Jouni Malinen                                            PGP id EFC895FA

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