A project I worked on did 802.11(b)? over about 30+ kilometers. The wireless stack was custom written though. The closer devices had planar directional antennas

A project I worked on did 802.11(b)? over about 30+ kilometers. The wireless stack was custom written though. The closer devices had planar directional antennas. The further devices had parabolic antennas. There was 3 different towers servicing ~180 detectors. Planar antennas near other towers had to have a shield added. This was 2007. I don’t recall bitrates. The area was well over 500 km^2 project is here: telescopearray.org