Are you referring to Dish DNS?It would be nice if they were on EA don't know why they are on WA so everyone could get them if they wanted too.
If so, the WA had East Coast SD and West Coast in HD. The WA has East Coast in HD and West Coast in SD. The reasons are to meet the FCC requirement of not receiving HD programs before they are available via broadcast.
Just because you can focus on a satellite doesn't necessarily mean you can receive the channels. So far, I haven't heard of anyone receiving West Coast HD using a receiver that is primarily on the EA satellites. Or a WA user picking up the East Coast HD off of a EA satellite.
It might work.