My parents have been DirectTV customers forever. Late 1990's I think. Live in the woods. ;)
They currently have an H23-600, HR44-200, two C51-500's, and two C41-500's.
Each receiver has a coax connected to it. I heard from someone that the latest technology only requires one unit to be connected via coax and then the others would connect wirelessly. Is this info correct? If so, which model receivers would these be and is an equipment upgrade/swap usually free for longtime customers?
Many thanks! fyi, I'm a technical guy familiar with big city cable, Comcast, but this DirecTV stuff is new to me.