The Natural Philosopher explained on 04/03/2017 :
But probably NOT with *exactly* 2.4Ghz

When I was involved with this, the permitted power levels antenna gain and
rain issues meant a couple of klicks was pretty much the usable limit.

Long distance microwave hops are at a different frequency.

It was an experiment with 2.4Ghz data link, as I remember staying
within the permitted power limits, but using some very specialised dish
antennas.

'In Flight Refuelling' rings a bell on this.

It was that experimental link, which prompted me to experiment with a
similar, though much shorter link across the village. I had it quite
successfully running for several months.