A few years ago, I read that cuba had like 250 MBPS for the entire island. A cuban guy told me that dial up was as expensive as a cheap appartment. (I dont know if their band has broadened, because Venezuela said publicly that they would connect a cable to them, but never heard of it actually happening).

Considering the extremely little bandwidth they have, a homebrew wireless 'cable' from Florida or Mexico would be a game changer for Cuba.