You need high frequency RG-6 because with DPP technology Dish uses band stacking to send two signals over one wire to dual tuner receivers. RG-6 needs to be swept to at least 2150 MHz.
If you need a definitive answer call 1-800-333-3474 and ask. Their technical dept must have a list of manufacturers and model numbers. You could also Email ceo@echostar.com.