See
http://www.lyngsat.com/t5.shtml
Most of the channels that have "F" on the "Video Encryption" column are FREE-TO-AIR. Other channels are encrypted and you will see the type of encryption it has.
So depending on the type of encryption you will need a CAM and smartcard that support it. The programming service provided, where you buy a subscription to that channel, should be able to help you.