The typical 'J-pole' used for satellite antennas makes a good mount for smaller OTA antennas. If the pole is on the south side of the roof and most stations are north, there may be reason to consider other mounting options. Ideally, the antenna would have an unobstructed view toward the stations you are trying to receive.
The coax cable used for satellite reception has more shielding than needed for OTA reception and will work very well if it has not been ruined by water getting into the core.
Satellite systems include accessory parts that may look like splitters but may be designed to operate at frequencies other than used for OTA. Satellite diplexers and multi-switches will need to be removed from the cabling system.
If you would like us to review your reception situation, and offer an opinion regarding how suitable the FV-HD30 is in your application, feel free to post a link to a TV Fool report for your location.