OLPC hardware: what if there was an SDR modem / chipset?

[Luke Kenneth Casson Leighton]

even this could be implemented. http://en.wikipedia.org/wiki/IEEE_802.22
_especially_ 802.22 which is a perfect candidate for SDR because of the
need to cooperate, and not interfere with the existing TV transmissions.

anything - absolutely, absolutely anything.  with SDR, you get
_proper_ freedom to develop the communications infrastructure needed
for the OLPC laptop users to support themselves and _not_ depend on
anyone or anything else.

l.