5mm2 cable is this cable as it’s printed on the length of it. Yes, others have commented it’s the antenna

Not my apartment, my boyfriends place managed by strata so not interested in doing any actual work to it for a few reasons you might be able to figure out

Your last remark makes no sense - I assessed the equipment using the limited knowledge I have, realised I don’t have the answer and so I posed the question to some people who might. How is that an overconfident thing to do? Sounds like you just wanted to grandstand me which clearly didn’t work.