Steve is right that it would produce stable TX/RS by using higher gain antenna.
Usually a reliable/stable range for TX of 11g would be 1 miles or few kilo, or it could be up / down. A higher power prism 802.11b would be more reliable than 11g if further than such range. Prism 2.5 chipset with 200mW/370mW is doable for hostap but it would show 100mW maximum internally, codes would need to be adjusted for more than 100mW. Otherwise an external high power AP (400mW 11b / 200mW 11g) board would be more productive. Kevin > > If you can't find a card with the transmit power you want, you may be > able to get the range you're looking for from antenna gain and type.