I feel like it would make both flavor sense and fit with the spirit and mechanics of the mod to make the Transreciever a space only building and only able to be activated once you're past the solar system edge. With its size and power requirements, players wouldn't be able to make a tiny, fast ship to speedrun the edge and instead support a massive ship able to both charge and maintain the massive power draw and the resources necessary to defend it. Hell, the challenge could be making a ship that's able to limp home after the "traditional" ending event.