@lucky86 is talking about the Dish basic remote, not any of the standard remotes that shipped with receivers. The basic was a "simplified" remote with fewer buttons. Evidently it doesn't use the standard Dish remote codes if @lucky86 is correct (I have no experience with it).
Pretty much any standard remote in TV1/IR mode from Dish going way-way-back should work with the Hopper - just might not have all the needed/wanted buttons.