wow, thats one of the neatest omni boxes i've seen....
truth is if that feed is going to other flats then you may have a signal problem, the iso in your home looks like an old analogue one and should be replaced for a digital, though this isn't really a problem, if the tech is good you shouldn't have a problem.
and if he is like me all the cables inside and out will look like new
just make sure everything is working before he leaves