” - - which, presumably, rely on similar technologies as those of the present civilizations of Earth. “
“We also happen to be sociable creatures.”
I sincerely wish these people luck, and they have to start with some sort of plan, and I could probably not come up with a better one. But - -
They are looking for the paranormal, the mere definition of paranormal means what they are looking for is beyond scope of normal scientific understanding. It’s a shot in the dark as any ET out there may not be using the same technology and if they could pick up their signals may not have the ability to decipher it.
And are they sociable? That’s another assumption.
And who is to say they are not here right now, studying us. Do we even have the technology to detect them if they are here or have tried to communicate?
Or are they a lot like us, with a waring nature where we (people and nations in general) are continually trying to take over other lands, subjugate the natives, killing them off at will?
Finding ET’s could be a very good thing or the beginning of our end (life on earth as we know it).
I'd bet on the latter...which is a damned good reason to stop broadcasting, do everything via fiber-optics or satellites. Maybe even stage a world-wide nuclear war on TV and radio - and then stop broadcasting immediately. Oh, and when our technology permits it, go after the Voyager spacecraft, capture them and bring them back for museums (or just destroy them).
We are likely on a similar technological level to aliens as insects are to us. So long as we don't notice insects, they do just fine. When we notice them and they begin to annoy us, they die by the millions or billions without a single human casualty or bite/sting. We would be best served by being quiet and hoping to develop our technology for several thousand more years as we expand off this single ball of dirt.