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First time poster - My brother just purchased a 46" Sony Bravia LCD television and had Dishnet out to give him his new HD DVR and new HD dish. The signal strengh from the HD dish was not that great (I believe the DN tech said high 60s). When we turned the set on and checked out The Discovery...

First time poster - My brother purchased a new Sony Bravia 46" LCD television to go with his new Dish Network HD service. Just installed last night and the HD looks very grainy with the standard digital channels also looking sub par. He was told be a seasoned installer that the signal...