In old fta box we cant add direct tp frequency. You need to change it in lnb frequency.
lnb - 9750
in this equation if you change lnb freq then we get other trans frequency.
The exact frequency you give is right but in old box it need to contest with lnb frequency [this is trans frequency 10600+5150-12595=3155 for old box] now this equation become like this
LNB FREQ 05150
Trans freq 03155
whenever we change LNB freq we need to change trans freq.