A DIY Yagi-Uda antenna
en.wikipedia.org
Are there any feasible alternatives to the physical infrastructure of the internet?
Okay, great, but that's only the easy part, user! Now tell me how to assign subnets on a global scale without authoritative instances, and how to route between these subnets.
If one were to strap these to a fixed-wing low RCS drone of sufficient size with solar panels, how big an Area could be serviced with pirate WLAN at 120m altitude?
Assuming the FAA or some disgruntled strelok don't shoot it down, and the Anons on the ground use >>829885's phased arrays.
everyone has their own personal server and everything is P2P
That only works for permanent point-to-point communication. You can't build a network on quantum entanglement alone.
B.A.T.M.A.N and a distributed hash table?
Ham radio.
Could you please elaborate on "a distributed hash table"? I know what that is and how it works, but how does it solve the routing and address assignment problem?
So you'd shoot neutrinos between transceivers? How will you be able to aim at such a tiny target over any reasonable distance? Even if you had it calculated perfectly the constant vibration of the earth would offset it enough for you to miss.
Satellite signals are sent in a giant wave, not a single particle.