It seems that exist an constant error displayed in Live Tune of about 10-30 kHz. From my measurements beacon is not shifted. It seems that this shift exists in all stations. The result is that when click to station a systematic error exists in frequency and must corrected delaying reception. As Live Tune take data from Goonhilly that is GPSDO locked I can not find any obvious explanation. A workaround is to put LNB Offset to a value that eliminates this but then when you put directly frequency it is wrong.