Hi Larry,

I posted recently that I had false reported signal values from 0 to -250 dBm 
which are impossible for a Wi-Fi card, so I guess there must be something 
wrong with the qdbm -> mw and mw -> qdbm calculations somewhere, probably 
affecting the showed result (I guess with iwconfig ?).

So I don't think your radio is currently restricted to 10 mW but it's probably 
emitting with 15 mW (it's physical maximum), but it reports 10 mW.

I may be wrong anyway.


Le Mardi 27 Juin 2006 03:15, Larry Finger a écrit :
> On my Linksys WPC54g V1 with a BCM4306 chip, the value stored in
> sprom.maxpower_bgphy is 40, which I believe is in Q5.2 and therefore
> corresponds to a maximum power of 10 dBm or 10 mW. In the US, where I
> reside, the maximum legal transmit power is 100 mW E.I.R.P. or 20 dBm.
> Subtracting the 2 dBm gain for the antenna (also stored in the sprom), I
> should be able to apply a power of 18 dBm to the transmitter and remain
> legal. Of course, the radio might not be able to handle that much power.
> The Linksys specs for the WPC54G V4 says that the maximum transmit power is
> 15 dBm.
>
> Is there a fault in my logic, or is my radio restricted to 10 mW?
>
> Larry
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