It's called account stacking when you have multiple rcvrs activated for others to use, in an attempt to have them paying only the extra $7/month for the extra rcvr versus them having to sign up under a separate acct and having to pay the full amount. Landlords like to do that for their tenants in multi-dwelling units.
In your case, your rcvrs need to be located at one address only per Dish Network guidelines. Does everyone always do that? No. If you get caught with the rcvrs at diffferent locations, they could cancel your service. Will it work at your second home? Yes. As long as the dish is the same as the one you have at your primary home.
If the dish isn't the same, then you will have to run a new system check (check switch) so the rcvr recognizes the new dish each time it is moved. That takes a minute or two. If you have newer 'VIP' rcvrs, then they will work on any dish. (Western Arc and Eastern Arc)
If you have an older generation rcvr (311, 322, 522, 625) then a different type dish between the two locations might present a problem, depending on the type of dish that you have. Western Arc dishes (they point towards the southwest) will work with all the rcvrs. Eastern Arc dishes (they point towards the southeast) will only work with the newer 'VIP' rcvrs (211, 211k, 222, 222k, 612, 622, 722, 722k, 922) not the older generation rcvrs.