Interesting if they only weigh 2.5kgs.
My pet theory is that Mode S was actually to "protect" us against UAVs - but since the Rotax 914s have all been gobbled up by the US for use in drones in the Gulf, I was thinking of higher weights than a fat pigeon.
Still, thin end of the wedge, I fear.
Happy Xmas to all, come and fly at Strathaven tomorrow, weather looking good!