I have a new SkyHD receiver and Quad LNB. As a result, my original Sky receiver is now sitting unused. I wondered whether it would be possible to connect my old Sky receiver to one of the unused inputs on my LNB and to then use it to provide the signal for the Sky Gnome radio receiver? I obviously don't have a viewing card for the old Sky receiver as it is now paired with the new HD receiver. I can't justify a multiroom subscription simply for radio. Would this work?