Most installs are only one dish. The eastern arc allows them to provide signals to customers that had line of sight issues before. Some cant even get signal from DirecTV, but they can get eastern arc fine.
E14 is needed as it will replace the E7 and its large inefficient spotbeams. E14 will allow them to provide more local HD markets. Plus they need as many satellites as they can get. If they had a failure right now they would be in a world of hurt.
I guess it just seems like quite the burden to have such a large fleet. In the end, I wonder if it will be a hinderance to get new channels, etc... since they have to go on each 'arc'.
I can see the advantage as far as locals go, as they need alot of spots to cover all these dma's. I suppose I feel like they will always be in a world of hurt if they have a failure, since one arc can't backup the other.
For instance, I am part of a six radio station cluster. If a transmitter fails, we have a frequency agile backup that we activate on the frequency of the failed station. If another one goes off at the same time, it's just off. If Dish loses 119 for instance, having eastern arc doesn't help them one bit. They could only reencode the western arc and compress the hell out of it to put 119's channels on 110 and 129. I don't know, I just feel like swapping everyone to 8PSK receivers and staying on Western Arc would have been easier to maintain over the long haul. I know, some people don't have LOS to western arc, but I doubt that they added enough new subscribers to pay for maintaining that fleet.
I must be missing something here.