Q: I have read ads for an antenna that can pick up stations 150 miles away. Is this possible?
A: Under extremely rare circumstances, a television antenna could possibly pick up stations 150 miles away. However, an antenna is only very rarely going to get terrestrial television broadcasts over such a distance.
Theoretically, it would be possible if you lived on top of a mountain and the broadcast towers were also on a mountain. At normal elevations, however, the curvature of the earth pretty much limits effectiveness to about 70 miles for UHF band signals. Low VHF band (2-6) can bounce further than this, but currently, only about 7% of digital TV channels are on the VHF band. Most Digital TV channels are on the UHF band - which is line-of-sight transmission.