How would you power it? A nuclear reactor?
I suspect that returning the signal to Earth would consume more power than the actual receiver part.
https://physicstoday.scitation.org/do/10.1063/PT.6.2.2019013...
> In a breakaway session, a telescope engineer told colleagues that power consumption alone could cost tens of millions of euros each year, a sizable chunk of the array’s projected €100 million annual operating cost. If costs did not come down, the energy requirements had the potential to hobble or even sink the project.
5078dc16f05cc325c8f8804f68e20feac85bea84
That's shorter than some transatlantic cables. I reckon it would be doable.
This all pales beyound mounting the cables though. If anyone does _that_ then the power issues are moot.