I have a 4700 and a 3500 receiver from before I went to HD at my home with 6131 receivers which have been working well for several years. Is it possible to install one of my old receivers at my cottage and bring one of my smart cards from the 6131 receivers to the cottage and use it in the old receiver when I go to the cottage. Will it work? Is it legal? I pay Bell enough for my service at home and I'd like to think its portable by bringing the card with me and sticking it into another receiver.