Hey guys, new member here, this is gonna be a bit long ...

So in my house (or my mums house, whatever) we used to have analog cable with 2 decoders, one in the lounge all by itself, and another in one of the three bedrooms that would go through an old vcr that would then output the reception through a splitter to the other 2 bedrooms, somewhere along the line the roof antenna would somehow merge with this reception and give these 2 bedrooms whatever the decoder was set on and the fta uhf/vhf stuff, all was good, but prime was a little fuzzy ...

Then just yesterday we got our 10+ year old decoders replaced with new digital decoders and we have the lounge decoder setup the same way as the old analog, but in the bedrooms we have the decoder that sends out the fta channels and whatever channel the decoder is set on thorugh the back rf output set up so it splits the signal to the other 2 bedrooms so we have tv there with (hypothetically) better reception! But i have one problem, the channels are quite fuzzy, with what i would describe as "texture" in the image. Is there any way to clear up this reception with like a booster or something so it doesn't look as grainy?

Thanks in advance.