The coaxial cable used to connect the LNB and the BUC should have a 75 (ohm) impedance and typically should be either an RG-6 or RG-11 cable. The decision made regarding which of these two types to use is one of cost vs. performance. The RG-6 cable is cheaper than the RG-11, but also suffers greater signal reduction. The RG-11 cable is usually more expensive, but provides a higher signal transmission performance. This performance difference should be considered when making any decision, along with any loss that may result from a larger distance between the iDirect Satellite Router and the antenna when making any decision.