That depends completely on what equipment you have installed now. If both of your receivers are fed from a DPP (Dish Pro Plus) Twin LNB on your dish, or from a DPP44 switch (would only be installed if you had more than 2 receivers or needed 4 orbital slots), then a single sat. feed to the 622's location will work for both tuners via the separator that will come with the 622. If you are receiving the sat. signals via DP (Dish Pro) equipment, like a DP34 switch then a second line would need to be run to the 622 or else the DP equipment would need to be replaced with DPP equivalents. Note - the "separator" is not really a splitter.