Poor reception

ralm

Vu+ Newbie
I have a Ultimo with a twin tuner plus a Terestrial tuner. From day one i had problems with reception. Changed LNB, changed cables and now change the whole antenna (Torodial 90). Signal strenght 98-99, ACG 73-75, some channels recieve, not recieve HD channels and no chance on UHD channels. Terestrial is also bad with very variable reception. If i plug in other tuner there is good reception. Is it something with my setup or is Ultimo tuners bad? I almost give up now.
 
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