A few years back, I had a condo on Lake Washington (east of Seattle) and a buddy of mine is a microwave engineer and we were hanging out one day out on my deck with our laptops and he mentioned how amazing it was that there were so many WiFi signals and he said he had a 4 foot dish from a 2ghz MW link in the junk pile at work that they had replaced with a newer 11Ghz link. He went and got it and we put a USB WiFi dongle on the feed horn on a tripod and it was amazing, we could point it across the lake and get all these WiFi hot spots some were open. It just shows, a big antenna on one end really helps with the link budget, of course, the beam width is super narrow so it's pretty finiky on the positioning. I am not sure the distance exactly there but it had to be a mile or two.