@ADTech. Just to follow-up, I was able to get polar plot, beam width, and gain readings of my antenna using a 665Mhz sub-channel test signal that is being sent out by XHTJB from their Tijuana tower. I overlaid two un-smoothed readings, one taken on the north side and the other from the south side of my home (the test signal is coming from the south). The north side is in yellow, reflecting the calculated 21.87dBi gain.
Seeing these details (no amplifier was used), are you still convinced that the CEA is correct in its classification of omnidirectional antennas as "short range"?