Hello,
I was looking for similar topics, there are such, but unfortunately I can't find a solution to my problem, simpler than the ones I've reviewed.
I have one antenna cable coming from the stairwell in my apartment. I just brought a TV, I want to connect it, and here's a surprise - one cable and it's used for the router. Apparently, the fitter who set up the Internet for me a year ago did not think that I might want to have a TV. How to separate it? I read on the internet about these (or similar) distributors:
https://obrazki.elektroda.pl/7635748800_1339696459.jpg
Does it matter which one I buy? What's next? Just plug in? Two cables and that's it? Will it weaken the signal?
In addition, one more tiny problem: I wanted to check if the TV would catch any signal at all, so I disconnected the cable from the router and to the TV ... and this end from the router does not go to my TV. I unscrewed the part and tried to connect it:

Can it be removed somehow? Do I need to buy a ticket? Maybe some names how it differs, what is the difference between the input to this router and the input of the antenna to the tv? Even that will help me.
Please help. In other topics I don't really understand everything, because I'm completely green and I need a simple explanation. But once I get some basic knowledge, I'll be fine.
I was looking for similar topics, there are such, but unfortunately I can't find a solution to my problem, simpler than the ones I've reviewed.
I have one antenna cable coming from the stairwell in my apartment. I just brought a TV, I want to connect it, and here's a surprise - one cable and it's used for the router. Apparently, the fitter who set up the Internet for me a year ago did not think that I might want to have a TV. How to separate it? I read on the internet about these (or similar) distributors:
https://obrazki.elektroda.pl/7635748800_1339696459.jpg
Does it matter which one I buy? What's next? Just plug in? Two cables and that's it? Will it weaken the signal?
In addition, one more tiny problem: I wanted to check if the TV would catch any signal at all, so I disconnected the cable from the router and to the TV ... and this end from the router does not go to my TV. I unscrewed the part and tried to connect it:

Can it be removed somehow? Do I need to buy a ticket? Maybe some names how it differs, what is the difference between the input to this router and the input of the antenna to the tv? Even that will help me.
Please help. In other topics I don't really understand everything, because I'm completely green and I need a simple explanation. But once I get some basic knowledge, I'll be fine.