I have successfully used two BUD's (ten foot "C" band dish) for a WIFI connection at ten miles between the two.
Both had good elevations (both were located on hill sides) and had direct line of sight to each other.
LNB's were removed and small WIFI antennas were used and boosters were installed inside the protective cover for the LNB, once lined up the WIFI signals were flawless and error free.
The first photo is the antenna and it's USB 2.0 WIFI 2000 mW adapter, the second one is the enclosure for the antenna and the USB inter face, the third is how it was mounted.
The USB WIFI interface was powered by a simple 2 port USB hub, then that was fed into a USB to CAT5 and POE converter, the CAT5 cable ran back into the house and was connected to the other end of the CAT5 to USB interface.
All that was needed was a PC at one end and a PC with internet port sharing setup to the router at the other.