perhaps easyer to use a laser and that old mirror the US guys put up there, the one some guy on a bicycle rides up a hill to a ground based laser every day and fires it at that moon mirror and he's proved that the moons moving away from the earth (very moonbase Alpha,1999)

very slowly apparently...
i wonder IF you Might get somewere with a bigger version of this
http://www.dailywireless.org/2009/04...ess-under-10k/
"free space optical communications..."
"
1Gbps Wireless - Under $10K
LightPointe says
their new laser optics product line delivers Gbps speed for under $10,000. The
FlightLite G combines low cost-per-bit transport, high transmission security, and SNMP management capabilities hin a compact, easy to install, and fully outdoor-rated unit, says the company.
"
but i'v gone a little OT with that...ROTFL