Hi everyone,
I set a RB333 with a R52H miniPCI card inserted.
After initial settings all was working well, than I tried to optimize the Wireless LAN parameters to understand well what was happening changing them.

After I changed the Tx-power parameters from
"Tx-power Mode = card rates, TxPower=17dBm"
to
"Tx-power Mode = card rates, TxPower=30dBm"
the card initially worked, even if not so very well, but after more or less 2 minutes it seems to be died and touching it, it was really hot.

Now, If I try to switch on the Wireless LAN Interface I cannot see any wireless signal.

Is it a limitation about the Tx-Power?
Did I burn the miniPCI card?
Anyone experience?

Thank you Henrik,
I believe to have understood really well (now) how to use this parameter.
Just the last doubt, the "burning" should not be happen if I set the antenna gain parameter (for example to 10dBi) , because of the TxPower trasmitted on the miniPCI should be the differences between TxPower and Antenna Gain.
Could you confirm it?

Regards,
Alessio

The tx-power default setting is the maximum tx-power that the card can use. If you want to use larger tx-rates, you are able to set them, but do it at your own risk! Usually, you can use this parameter to reduce the tx-power.

In general tx-power controlling properties should be left at the default settings. Changing the default setting may help with some cards in some situations, but without testing, the most common result is degradation of range and throughput. Some of the problems that may occur are: (1) overheating of the power amplifier chip and the card which will cause lower efficiency and more data errors; (2) overdriving the amplifier which will cause more data errors; (3) excessive power usage for the card and this may overload the 3.3V power supply of the board that the card is located on resulting in voltage drop and reboot or excessive temperatures for the board.