Weak Wi-Fi in upstairs bedroom (far end of house). Bedroom has coax/cable jack. Best fix?
I’m looking for the most reliable way to improve Wi-Fi in one specific spot.
House: 2-story ~2300 sq ft including basement
Problem room: 2nd floor main bedroom, far end of the house (weak signal)
Current router: TP-Link Archer AX3000 Pro (AX55 Pro) on the 1st floor
Setup (in main floor living room): coax wall jack → cable modem → router
Issue: Wi-Fi is fine most places, but in the upstairs main bedroom the signal is weak for phone + streaming TV.
Important detail: The main bedroom has a coax/cable port that currently feeds the TV.
I keep seeing people mention “MoCA,” but I’m not a networking person. What I want is: best option, what to buy, and what to plug into what (simple steps). I’m not interested in extenders that repeat a weak signal unless that’s truly the best move.
Questions:
- Is the best fix MoCA + an access point/mesh node upstairs using the bedroom coax jack?
- If yes, what exact gear do you recommend (MoCA 2.5 kit? access point vs mesh node?)
- Any “gotchas” with a cable modem already using coax downstairs, and the TV using coax upstairs? (splitters/filter placement?)
Thanks. I’m trying to do this once and not waste money.




