Presuming your dad is looking ONLY at WA sats, then I would think Dish would replace the two reflector set-up with a single reflector that can see up to 3 or 4 sats on a single reflector. It is the less expensive and faster, easier install and with all NEW refelctors and LNBF's. That's what they did in my case when I had a two reflector set-up. I think there might even be a Dish Corp policy for Dish Corp installers to change out legacy (not recent ones) installs for brand spanking new state of the art installs for all upgrades, not necesarrily a truck roll to fix a problem, but I don't know that for sure. But for almost every upgrade I've gotten, the Dish Corp installers said he was going to put up new stuff. Of course, that was Dish Corp. installers. A contractor could do it differently.
Well, quite the contrary: today the only way to accomodate more than 1 H3 is with multiple reflectors as each H3 would need its own reflector for core services and even a 2nd for internationals. That would mean a grand total of 4 reflectors for two H3's looking at 4 sats or 2 reflectors for two H3's looking only at core 110, 119, 129. And these installs were made during the early months of the H3 being available, but then Dish changed it policy and no longer allowed ANY multiple H3 installs. The DPH42 will make it possible for Dish to provide multiple H3's looking at up to 4 sats using only ONE reflector that saves Dish on the cost of the upgrade and also provides for fewer points of failure in the future. IMHO, it was a pure MONEY decision to cease multple H3 installs because the addtional reflectors needed were a cost Dish was no longer willing to bear. Many of us are waiting on the DPH42 so that we can have at least 2 H3's on ONE account. BTW, if you want TWO H3's, Dish is HAPPY to provide such an install, but ONLY if you open another Dish account, hence, it has always been technically posssible (remember they were doing 2 H3 install on one account at first, but then shut that down) and it was ALWAYS about the MONEY! Otherwise, why permit such an install ONLY in the case of opening another account, but the DPH42 will permit 2 H3's on the same account. The only variable here is the MONEY! It's a pure business decision on Dish's part, not a technical one.