it is impossible to answer to this question. i have not enough details. There are more than 1000 reasons that could cause that.
I don't remember me or someone else having this issue.
it can be the hardware, it can be the signal .., interferencies ...
and you say nothing : on which band , frequency? using LNB or not ... do you have analyze the spectrum?
the first thing to do is to try on a direct freq, receiving directly your own signal on 437MHz or 1255MHz from a Pluto or Lime Mini or Minimod at SR1000 or 2000.
Have you tried to receive also a broadcast station from QO-100/Es'Hailsat2 at SR27500?
https://www.youtube.com/watch?v=-WlHawgb8IQ&t=9s
- receiving Broadcast station from ES_Hailsat.jpg (320.95 Kio) Vu 7974 fois
take picture of what shows Minitioune and put it here on the Forum.
Jean-Pierre F6DZP