After scanning all channels were first there. Shortly afterwards, could no longer be displayed for a few channels (eg Pro7, SAT1 and some others). I think as an error message always came "not connected LNB", signal strength and signal quality are indicated by 100%. Thankfully I then read in a forum that a SAS SAS, 0-20 dB, F-Kupplg / -F-Kupplg 0.1 to 2400 MHz for 3 Euro to remedy the situation. So quickly in Amazon part and see ordered there, all stations can be displayed again, In support of egalto I have found no indication why two star deduction.