Indoor TV Antenna? Make Sure You Know What You’re Getting

Any TV set made since 2007 has a digital tuner that lets you watch over-the-air (OTA) channels for free, if you get an inexpensive indoor antenna. These channels usually include local broadcast channels, including high-definition or “HDTV” signals. But an OTA antenna won’t get you free “premium” channels, which you can only get from cable,...