Hi Peter,

I hope you are aware of the OLPC project, because you seem to share
some of the same goals. See http://laptop.org/

Yes I'm .... and HCL is taken up into manufacture it

> setup a USRP1 based BTS .. which might cover near by villages also.

With 11 dbi Anettena and appropriate PA . we can do it up 5 to 10 KM ( send a mail to Ettus)

>Did you research other RF interfaces than the one used by GSM?

Yes , and are legacy . need higher bandwidth.
and Why I'm not thinking for Armature radio or Air broadcasting .. it is only One way..and other drawbacks

do you have any suggestion ?

>>> Define cheap and small bandwidth?
They have very cheap equipments ( out of store almost) for providing low bandwidth. like 64 Kbps, 54 Kbps even 9 Kbps RF interface.

on demand they can supply.

you will be kind enough you you give me other cheap solution after all its all for charity..

rather then GSM ,

and one more cause to attract me here is in some places we have GSM infrastructure and , Govt and some private operator will let us user some part of it.

Kind Regards,