A company I worked for in the early 2000's produced a reality tv series which was shot on an island about 1.5km out from the city shore. It needed a decent (but rather temporary) Internet connection and our company headquarters happened to be near by, so my colleagues set up a directional WiFi antenna pointed from the building's rooftop to the island. The total distance of the line-of-sight WiFi connection was about 2.5km and apparently it worked fine when the weather was okay.
Now you need to match your experience with the post above about the van stopping in the link's line of sight and tell us:
- what wifi you had and
- what the bandwith was.
We need to solve the riddle if it was wifi or laser link.