Radio interference between different channels
Frogot to say, the 5 miles I'm talking about was already in shortest distance, meaning a straight line.
By road it would be like 10 miles far.
Thanks all for replying, the farmer was actually talking about "radio interference", we do fly way below the flightline of the bigger planes, By the time we would be that high it would be impossible to see what direction to planes would be in.
Anyway, I'll keep you posted as we find out more ourselves...