How far into space have radiowaves travelled?

We've been broadcasting our existence into deep space via 'radio leakage' for more than 100 years, Travelling at the speed of light: 3 x10^8 that encompasses a sphere that spans more than 200 light years across and dozens of planetary systems the signals in theory have reached extreme deep space, but any artificial intelligence would need antennae to receive the signal hundreds of kilometres across to pick up the signals.