I started my DirecTV service in May of 09 and I have an HD-DVR on my HDTV well my uncle has an old Gen 6 RCA receiver that he used to sub to he canceled in feb/04 he was still using the HU-Card at that time, DirecTV did send him a P4 Card to replace the HU but he never did the swap and canceled instead. He said I could buy the receiver & P4 Card (still stuck to the swap letter) for $20.00 as a second unit this would suit my needs just fine. Can I still activate this? I have heard from a few people that DirecTV no longer uses the P4 Card.