RAD put the numbers to what I said.
I doubt that, simply because it is unlikely that the all current Dish satellites have a useful life of a whole decade. There's no way they'd want to launch any new satellites for Dish services after they bought them...
The age of the satellites is irrelevant - the merged company would never surrender licenses that can serve the Western Hemisphere. While, in the extreme long run, Dish's eastern arc slots might be reallocated to latin America, they will still need functioning satellites there. Therefore, old satellites WILL be replaced, merger or no.
As I said, they would probably deprecate one receiver architecture or the other, but it would take a VERY long time before the number of "legacy" customers reached a number small enough to make the wholesale conversion feasible. When aquired Primestar had only about 2 million subscribers. Dish has 14 million, and the cost of current hardware and labor is much higher than when those 2 million Primestar subscribers were migrated (there were no DVRs back then, for example).
Another factor is that if they were going to do such a migration, it would probably involve, at a minimum, an LNB like the Slimline 5 (supporting Ku at 101/110/119 and Ka at 99/103) which has not even been the DirecTV standard for a couple of years. It would make sense to also include the Dish Ku and Ka capacity at 121 in a new ODU. Dish leases the capacity on Ciel-2 at 129, so that is a non-issue. In the end, this means an ODU capable of receiving Ka from 99/103/121, RDBS from 99/103/121 and Ku from 101/110/119/121. This would require a new switching architecture as well, supporting at least 9 or 10 bands (depending on whether RDBS is available at 121) and maybe triple stacked from dish to switch across 3 or 4 cables. This would not be not cheap to design and build.
Someday they would have a single platform, just like someday XM and Sirius will be a merged service, but it would take a very long time.
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