I think that really has to be up to the GM. Like I said, for me, the answer would be no, because of the, well, magical aspect to magic. It's not just a technical process. But I'm aware that that's my headcanon - the inner workings of magic aren't really described in the game, at least yet.
If it *does* work, though, I think it's important to look at how this actually works, which I finally found. It doesn't, like, summon a demon the way Heretical Magic occasionally does in the CP; as they say, the demons are already there. They just `hear' it. And to carry along with your example of why a duck call isn't a good metaphor for this, Technodemons are a whole lot smarter than ducks.
So, we know that ducks place a high priority on destroying anyone with bird-call knowledge within their-- wait, again, no, though they sure should. Technodemons place a high priority on destroying anyone with arcane knowledge in their domain, but that doesn't mean they just fly in blindly. Honestly, if you're setting up an ambush, shouting, "There's something here!" usually isn't the best technique - the players may be on better footing than the average hapless mage the Technodemon is hoping for, but any approaching Technodemons are, nevertheless, coming in also alert and on their own terms as well. There's nothing to say they won't have a look before they dive in, and if things don't look right... well, maybe they've got a `tough guy' Technodemon who figures it can handle it. Or maybe they've got one of the more strategic types, and it calls in a few friends who `owe them favors' (eg., lost their last staredown) and an army of Thralls, instead.
If it does work, it's a few orders of magnitude riskier than playing with fire. I generally feel the group's (players and GM) enjoyment is the top priority, but this seems like a place where a TPK should definitely be squarely on the table.