You can get a COAX A/B switch and mount that in your media center or if you really want to be lazy like me you may want to look into the remote control A/B COAX switch. If you have cable and the antenna connected at the same time your signal would probably be degraded. If you use a TailGater Satellite system, it puts a voltage (I think 20 VDC) on the COAX from the receiver to the TailGater antenna for satellite alignment, not good for anything else connected to the COAX.
Don
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