Problem with universal head with 2 outputs

ok thanks for the info I'll check tomorrow hoping it will work out, I'll let you know more, see you next time

The parabola is an 80 and regarding the signal (compared to the graph of each demo) it gives me 99% quality and 97 level on the first and 87 and 76 on the second.

Hello,
It's not cheap, before investing in this type of cable I think I'll try with an amplifier that a colleague just lent me, what do you think?

In fact, apart from the demos from tntsat, everything comes from brico depot. I bought my satellite dish after building my house because it was the only solution for TV, and it's been working for 4 years. Looking at the prices elsewhere (I’m talking about the LNB, which I paid €46), it isn’t cheaper, so I might as well buy it where it's closest. Now, it's clear that if you want quality, you have to pay the price, but if I had bought all the equipment from a specialist, who’s to say I wouldn't have had the same problems?
In any case, I'm not going to repurchase equipment I already have; for the cabling, yes, but otherwise, it should do the trick.

that's it, one works and the other gets no signal

Good evening, the 2 demos are connected to each TV, but when I do the cross tests as mentioned before, I realize that the cables work because I connected them one after the other to the TV that has a signal.

For the orientation, I based it on my neighbor, I'm at a 35° angle, however for the cable I have a simple one bought at the home improvement store. Do you think this has a big impact on the signal or attenuation? Anyway, thanks for your help because I'm progressing slowly.