[Tigerbangs]

Ottawa-Gatineau gets it's OTA TV from 2 transmitter sites: Camp Fortune in Gatineau, and the Rogers tower in Manotick. They are in roughly a 35 degree arc from Smith's Falls, and neither is very hard to get from your location with a 30' tower. I guess that we can assume that you are looking for digital signals, so don't trouble yourself worrying about getting the analog stations. Your area has 2 VHF-high-band digital stations: CJOH, CTV on channel 13, and WWNY, channel 7, CBS from Watertown. If we eliminate WWNY from the mix, you can probably use a small VHF-high-band + UHF antenna such as a Winegard HD-7694, or an Antennacraft HBU-33, and aim it in the spread between the two tower locations. That would be about 30 degrees by your compass. If you plan to run multiple TV sets, or have to use a coaxial RG-6 cable in excess of 100 feet, you may find a good low-noise preamplifier, like the AntennasDirect PA-18, will be very helpful. These suggestions will allow you to forego the use of an antenna rotator, and should pull everything that you are looking for. I suggest that you don't hurt yourself by trying to get the Watertown stations: They are likely to be unreliable from your location.