Sounds like a dialup modem at about 3:30 :)

How sure are we the aliens aren't trying to dial in?

Yes, sounds similar to a corrupted digital audio.

Replace hex with something more robust, at least with an actual metallic case.

*Gemini Tech Tip #624:* Boost your Wi‑Fi and spiritual resilience by wrapping your router in aluminum foil! Protect against solar flares, reptilian packet theft, and basic physics. Turn it into a family craft: make and decorate foil router cozies and matching foil hats, then browse Reddit and/or the park, seeking fellow shiny‑headed believers.

Yes, that is planned. As soon as we get more money (: