what to choose the attenuation of RTV / SAT sockets - 1.5dB or 10dB

Hello,
I searched the topics related to RTV / SAT sockets, but I am still not sure which antenna socket should I choose.

* The installation is in a single-family house
* The cable will be directly connected to the multiswitch at the antenna (probably the length of the cable between the multiswitch and the socket is about 15-20 meters)
* I would like a socket with 3 outputs (RTV / SAT)
* I don't know what device will be connected to it yet
* I do not know the parameters of the antenna or the device (multiswitch) yet


What attenuation should I choose 1.5dB or 10dB?
* http://elektralnie.pl/szukaj/valifb-gn-tv-rd-sat-zakoncz.html " target="_blank" rel="nofollow noopener ugc" class="postlink inline" title="" > http://elektralnie.pl/szukaj/valifb-gn-tv-rd-sat-zakoncz.html
* https://elektralnie.pl/szukaj/valifb-gn-tv-rd-sat-konco.html " target="_blank" rel="nofollow noopener ugc" class="postlink inline" title="" > https://elektralnie.pl/szukaj/valifb-gn-tv-rd-sat-konco.html

From what I understand, the amount of attenuation needed may be related to the signal strength from the multiswitch, cable length and the receiver itself.
I currently only know the length of the cable.

Definitely with less damping.

I still read and finally found an explanation -
* end socket is used for star type installation (without through socket)
* termination socket is used for serial installations

It all depends on the signal level at the input to the socket. 20 m of a good cable means a loss of about 6 dB. If the level is still too high, and it should be remembered that we have to fit in the band, about 48-74dB (at the outlet from the socket), it will have to be suppressed so as not to distort the head in the receiver, i.e. use an end socket with greater attenuation. We try to "aim" with the signal level m / w in the middle of the range, that is about 60dB

I will want to use such a Terra MR508 multiswitch.
https://www.dipol.com.pl/multiswitch_mr-508_t...owy_8-wyjsciowy_z_aktywna_naziemna_R70608.htm
Cables in a single-family house as a colleague wrote and placed in a star. I think also about 20-25m
What end sockets to buy with what attenuation?

I want 1.5dB for the living room
https://elektro-hurt.com/legrand-niloe-gyszne...at-sat-koncowe-1-5db-bialy-764566,id8834.html

And I don't know other rooms:
Is 10dB
https://elektro-hurt.com/legrand-niloe-gyszne-tv-rd-sat-koncowe-10db-bialy-764565,id8833.html

Is 2 dB
https://elektro-hurt.com/legrand-niloe-gźdzo-tv-rd-sat-g Gwiazda-2db-bialy-764563,id8831.html

Please help.

So I can safely take what I showed ...?

OK thanks
Because you gave me a second link to the 10dB socket ...

There are no sensational prices, you can buy better.

I closed the topic as archival.
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I will add from myself, I wrote about it once: the terminal sockets (with the attenuation introduced for the VHF / UHF band, never SAT) are mainly produced for the German and French market, where the cable signal distribution of local / operator networks with "gluing" of local building networks is used satellite installation. Quite a popular solution wherever there are "national minorities" using SAT positions other than eg Astra or Eutelsat W5 A popular solution, for example in Berlin in Kreuzberg, Paris 18th district or Saint Denis near Paris.
In Polish conditions, the use of attenuated sockets does not make much sense if multiswich is used, where the VHF-UHF signal levels are locally controlled.
On the other hand, there are "collective" houses built as if "hybrid", where the existing installations of the old type - in series from apartment to apartment - are fitted with cables going to the multiswich and supporting almost exclusively satellite signals - sometimes also cable operators. But then it is clearly stated that it is a through socket.