We live in a rural area and use one of this indoor “fly swatter” antennas. works to about 40 miles but I am highly doubtful of the 85 miles claim. However, the signal amplifier is ESSENTIAL to use.
Also, it seems not all TVs are equal when it comes to “picking up” stations for some reason. Also, don’t stick it in one place. Transmitters are not in the same place and you will need to reorient it.