I looked up the JVC combo unit and see it has component and composite video outputs but no coax (UHF/VHF) output and I'm guessing the TV doesn't have a composite video input but only the coax (UHF/VHF) input.
IF (and that's a huge IF

) that's the case, you'll need a
RF modulator (composite to coax converter). That should do the trick.
Since you have basic cable you will probably want to connect the cable from the wall to the TV at the same time the JVC unit is connected. If this is the case, you'll need some kind of coax switch box so you can switch between the cable TV and the JVC unit as the video source for the TV.
Peace...