Recently purchased a Samsung Model LA26B450C4M TV (with built in FreeView).
I have a UHF and VHF aerial on the roof.
I live in Tuakau. Freeview site says there is a very good chance I get it here.

They are joined together in a box that adds/mixes the signals.
And Ive hooked in to the back of my TV.

I used to be able to get Maori channel and Prime on thise setup onmy old TV (with no built in FreeView) which I understand are on UHF. Correct?
I cant figure out how to get Freeview at all?
Ive done a atuotune and I only get Channel 1,2,3 (I think its 3?) now. It only picks up Analogue channels when doing an auto search.
Any suggestions?