Or... If it's not an HDTV on the 530 you could use the coax out (TV3/4) connection and run the signal from the 530 to the TV over the single, existing coax and locate the 530 closer to the dish where it might be more convenient. You probably will get some noise using that method but it's better than nothing if that's your other choice. You could also use a stand-alone distribution modulator and get a cleaner signal to your TV.
The UHF remote will work through walls for quite a distance, particularly if you use a length of coax to extend the antenna.