Amateurs have an allocation of 2.4GHz to 2.45GHz which the LCD states we can use with any emission mode with no bandwidth restriction (Schedule 2, Part 1 on page 26). Wifi channels 1-6 fall completely within this amateur allocation and I am claiming that the above quoted power restrictions apply in place of the wifi class license. According to the WIA band plan data the allocation is on a secondary basis, I *think* that the primary allocation is for ISM use, either way an amateur using this spectrum (whether for wifi or something more mainstream like SSB) can't cause interference to existing wifi installations, so it would be very difficult to use more than 4W ERP anyway. But I see no evidence that the LCD limits power as claimed above. Edit: Probably also worth noting that when using higher power under an amateur license nothing can be encrypted, (only use WEP </sarcasm>) so you wouldn't, say, be able to use SSH over such a wifi link, or HTTPS etc.