Thats where the experimentation comes in - you need a selection of Ka band lnbs (because there are at least 4 Ka frequency bands in use) and a spectrum analyser.
Otherwise you are just working blind. You might get away with using a pci computer card if you know what you are doing with it. Failing that its a case of waiting for more info to become available.
Its very very unlikely these spots will be used for any tv channels any time soon. They are far more likely to be used for data backhaul, internet connectivity for remote areas, military or governemnt data comms etc.
The only reason one spot is allocated for tv services for Ireland is its the only way the Irish "Freesat" service could work without excessive overspill into the UK. (The overspill only really extends into central Wales & Devon)
and,yes why do the Irish hide their TV so well? another mystery