If Aliens are Near Enough to Attack- Will They Have Vacuum Tube Tech and Radio?

image credit:
 https://commons.wikimedia.org/wiki/File:Alien_head.jpg

 The search for extra-terrestrial intelligence has gone on for a while and not found anything. Using radio telescopes to listen for alien hip hop music or some sort of equivalent several light years away scientist keep looking for the tell that will show where the aliens live. What sort of technology would they have that would allow them to travel faster than light, or maybe just at a high percent of it in order to reach Earth and vote for Hillary if she runs again?

 Aliens may not have advanced beyond vacuum tube technology and radio waves terribly far yet with a little tweaking they could ram up their spacecraft of war and slide on the space-stream greased with proto-teflonium beams maybe. The sort of technology that N.A.S.A. or SETI could detect from light years away might not be the sort of technology that aliens would actually use if they presented as great a threat to the Democrat Party as another Clinton run at the White House or global warming carbon dioxide gas that has already reached 410 parts per million in the atmosphere. 

Aliens might be able to slip through quantum super-positioning dimensions and get about instantly faster than light without reference to space-time local history at all. They might be able to surveil with smaller than atoms technology and rebroadcast that across the galaxy or galaxies in some unknown way. What I mean is that if they are able to get to the Earth they probably would do so without being noticed by scientists. If they were to survive and not be hunted down by other space travelling species travelling to their home world they may have learned to scrub space of any sort of artificial signal and hide their presence in a way comparable to the way people wipe out their trail from trackers with brush in centuries past.

image credit: https://commons.wikimedia.org/wiki/File:Triody_var.jpg