What is the max power for my card?

Sachin Ganu sachin
Sun Jan 19 09:53:00 PST 2003


Hi Jouni,

On similar lines, everything below -47dBm is clamped.
My question is what is the actual transmit power of the card when
the card is set at -47dBm?

I think there is a routine in prism2_ioctl.c that does the calculation
But I am not sure on what is the actual Tx power of the card? 
-----------------------------------------------------------
Sachin Ganu
Ph.D Candidate
WINLAB, Rutgers University
73 Brett Rd, Piscataway NJ 08854

On Sun, 19 Jan 2003, Jouni Malinen wrote:

> On Sun, Jan 19, 2003 at 01:12:53AM -0800, wireless at douglasheld.net wrote:
> 
> > The documentation online for this card is unclear; I wonder if I can use
> > iwconfig to query the maximum power setting?
> 
> No, Host AP driver has no way of knowing the real maximum transmit power.
> 
> > Currently, iwconfig accepts ridiculously large values, like 300mW, without
> > complaint.
> 
> Everything over 20 dBm / 100 mW is interpreted as the maximum value for
> the card. In other words, setting it to 300 mW or 200 mW configures the
> card exactly in the same way as using 100 mW.
> 
> -- 
> Jouni Malinen                                            PGP id EFC895FA
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