How about running a long RCA (red, yellow, white) cable from living room byond box to the bedroom tv upstairs? Not sure maybe 10m. PQ should still be ok right? Better than RF?

I've actually tried using an AV-RF converter (because I have existing RF wiring for my old Astro setup), but the signal was totally unwatchable. Ended up returning the damn unit!

So that's why considering connecting the RCA output directly to the bedroom via a long cable.

Anyone tried this before? Thanks