Ah. On cable, you don't need the antenna amplifier. Many amplifiers are designed to switch between cable and antenna when the amplifier is turned on and off, from what I understand. Assuming you get adequate reception with it off, no further work is needed. If you don't, verify that directly connecting the television to the park cable connection gives proper reception before attempting to troubleshoot the system in your RV; I'd think there would be a good chance that the difficulties lie in the park distribution system, and no amount of futzing with your RV will help that.
