I posted this for BB9 but can't find the thread - don't know if it still works but here's how you do it:
Press "Services", select "System Setup", then "Add Channels".
Enter the following details
Frequency : 12.480
Polarisation: V
Symbol Rate 27.5
FEC: 2/3
Select "Find Channels".
You will see 2 new channels - Move the cursor to "12005" and press Yellow, then Select.
To watch the channel: Press "Services" and select "Other Channels" and select 12005
There is a full list of all hidden here;
http://www.lyngsat.com/28east.shtml