[mythtvnz] No signal on TeVii s480

[Glenn Ramsey]

Hi,

I am trying to set up a s480 card for watching/recording Freeview over DVB-S but
am having no luck so far. Using mythtv-setup or dvbtune or w_scan all show nothing:

w_scan -c NZ -f s -s S160E0

dvbtune -f 1733000 -s 22500 -p h -m

Are those correct?

I have a working freeview decoder on the dish which has a 10.750 GHz LNB
frequency so I assume that there wouldn't be an issue with the dish or cable.

I'm using mythbuntu 12.04 and the firmware from TeVii's website. dmesg shows
that the card seems to be happy.

What can I do next to diagnose the problem?

Cheers
Glenn