I didn't notice what they showed on that link. In our situation we had tried a customer supplied antenna and didn't work for getting all the stations. We tried one of those HD stackers big antennas and it didn't work either. What we ended up using because stations were less than 25 mile was two of these per their recommendation.
[Link: dennysantennaservice.com]

Their website is hard to follow but I just call them when I need help.