In order to view Channel 39 you will need Freeview|HD terrestrial (aerial based) coverage at your home. You can check for coverage here. Or view the Channel 39 Freeview coverage maps here.
If it looks like you have coverage at your house you then have 3 options for what equipment you will need.
If you have a UHF aerial and want Freeview|HD (built-in)
If you have a UHF aerial and want Freeview|HD
Setting up Freeview|HD via UHF aerial to panel TV with HDMI cable
Setting up Freeview|HD via UHF aerial to older TV with composite cable
If you have a UHF aerial and want MyFreeview|HD
How to use your Freeview EPG (Electronic Programme Guide) & MyFreeview