Humax F1-4000T - Manual (Page 24)

Guide of Main Menu
You select the STB output by using the UHF channel.
Select an UHF channel. The range of channels and frequency
value are different for each PAL Standard:
PAL I/G for Europe
: CH21 ~ CH69
PAL B for Europe/Australia : CH28 ~ CH69
PAL D for China
: CH13 ~ CH62
PAL K for Russia : CH21 ~ CH69
Select a PAL Standard according to the above range of channels.
Adjust the fine tuning value. The Offset ranges from -4 to +4 and
each Offset represents 1MHz.
UHF Tuning
Channel
PAL Standard
Offset
GB23