Ministers know nothing, strictly speaking
What I mean is that he's is almost certainly not a specialist in radio networks, and all the knowledge that entails to do with radio coverage, frequency sharing etc. (and neither am I, as you can probably tell).
He just repeats what his minions tell him, and if that doesn't sound right, he probably just makes it up on the spot. Which to my untrained eye, looks very much like what he's done here.