In one of his videos, he clearly states that there's no such thing as an digital or HDTV antenna - it's all marketing hype.
Any "analogue" antenna will do just fine. Antennas "don't care" if a signal is analog or digital - what's important is that the antenna is designed to pick up channels on the broadcast frequency.
Since the digital conversion of 2009, most tv stations have changed broadcast frequencies.
A little background.
When commercial broadcasting began in earnest right after WWII, the FCC had allocated 13 broadcast channels - 1-13, to be shared with local first responders. This didn't work out too well. Thus, in 1948, channel 1 was eliminated and allocated exclusively to first responders, and channels 2-13 exclusively to TV broadcasting.
In 1952, the FCC added the UHF band to TV - channels 14-83. Through subsequent decades, the FCC has taken away the higher number channels and reallocating them for other wireless purposes, e.g., cellular communications. The latest will reduce the TV band to channels 2-36 by the end of 2020.
Digital broadcasts on the "low VHF" band, channels 2-6, are very unreliable and very few TV stations broadcast on them (closest to Columbia is PBS for Augusta).. A good example of what many stations have done is what WBTV up in Charlotte did. They actually now broadcast on channel 23. The FCC was cognizant of many TV stations known and marketed by their original broadcast frequencies, and thus built into the digital conversion the "virtual channel (PSIP)". Basically, as part of their broadcast signal, WBTV "tells" your digital tuner to "show" their signal on channel 3, thus keeping their identity intact post-analog.
In Columbia, WOLO actually now broadcasts on channel 8, but their signal shows up on 25 for the same reason.
For most OTA TV viewers today, as long as your antenna can pick up stations broadcasting on channel 7 and above, you should be good to go. Forget the digital and HDTV antenna marketing hype.
In my Beaufort home, I have a Channelmaster 4228 antenna with a Winegard 8275 preamp. The reason for a preamp is to limit signal degradation as it travels from the antenna to your tv (or splitter in my case). The antenna is about 5.5 meters off the ground, and about 1.5 meters above the pitch of the roof. If the antenna was in the attic, it's highly unlikely I could pick up any signal from Charleston.
