The answer first
Choosing a TV antenna is one lookup followed by one decision. Enter your street address into the FCC’s free DTV Reception Maps tool; it returns the stations predicted at your location, how strong each one is and which direction it comes from. That result tells you whether you need a 30-dollar panel in a window or an antenna on the roof.
Do not shop first. Nearly every bad antenna purchase is someone picking the biggest mile rating they can afford for an address that needed something quite different — or, just as often, buying an amplified antenna two miles from the transmitter and losing channels to tuner overload.
Step 1: find out what your address can receive
The FCC’s DTV Reception Maps tool is the single best thing in this whole category: a government tool, free, no account, that takes a street address and returns predicted reception for it. Not your city — your address, because a hill or a tall building changes the answer within a few streets.
Three things to write down from the result. Which stations appear, so you know whether the channels you care about are even in play. How strong each one is, which decides indoor versus outdoor. And what direction they come from, which decides directional versus omnidirectional. Our longer walkthrough of the tool goes through reading the output properly.
Treat it as a strong prediction rather than a promise. It models terrain but not your neighbor’s oak tree or the foil-backed insulation in your walls. The point is that it gets you to roughly the right class of antenna before you spend anything.
Step 2: indoor, attic or outdoor
One rule, and the FCC states it plainly in its own consumer guidance: outdoor antennas generally get better reception than indoor antennas and are strongly recommended for the most reliable reception. Everything else here is a trade against that.
Indoor is the right first try when your signals are strong. It is cheap, takes minutes, needs no tools and nothing is drilled, so a failure costs you very little. A flat panel taped to a window frame facing the transmitters is the standard answer.
Attic is the underrated middle option. You get height, which matters more than almost anything else, without a ladder on the outside of the house, without a grounding plan and without anything visible. The cost is signal lost to the roof covering, which for a mid-distance address is often an acceptable trade. The ClearStream 2MAX works in an attic as well as outdoors, and that is where we would put it first. Our attic antenna guide covers the specifics.
Outdoor is for marginal and rural addresses, and it is a real install job: a mast or bracket fixed to the building, a coax run through a wall or soffit, ladder work, and a grounding plan on anything large. Do not start here unless the FCC result says you need to.
Step 3: directional or omnidirectional
Look at the directions in your FCC result.
All in roughly one direction? Buy a directional antenna and aim it. All of its sensitivity points one way, which is why a directional antenna properly aimed beats an omnidirectional one every time in that situation.
Scattered around the compass?You have two choices. An omnidirectional antenna like the Channel Master Omni 50 receives from everywhere with nothing to aim, at the cost of less gain in any one direction — and it collects interference from every bearing too. Or a motorized mount you re-aim from indoors, which our rotator page covers; it is the better answer when the two groups of towers are both weak.
Step 4: do you need an amplifier? Probably not
This is where beginners lose channels, so it is worth being blunt. An amplifier does not strengthen a weak signal. It strengthens everything, including the noise, and near a strong transmitter it can overload your tuner and cost you channels you were already receiving.
Amplification genuinely helps with two things: a long coaxial run from the antenna to the television, and splitting one antenna across several sets. Both are losses in the cable rather than problems at the antenna, and that is what an amplifier is for.
Which is why, if you buy an amplified indoor antenna, we would buy one whose amplifier can be switched off. The Mohu Leaf Amplified has exactly that switch, and being able to test both ways and keep whichever scanned better is worth more than any claimed figure. For splitting to several televisions, the right part is a distribution amplifier — see antenna amplifiers and preamps.
Step 5: check VHF, which the listings quietly skip
The FCC states that VHF is channels 2 to 13, UHF is channels 14 to 36, and that many antennas sold as “HDTV antennas” receive UHF well but VHF less well.
Most stations are on UHF, so most of the time this does not come up. But if your FCC result lists a VHF station you actually watch, check that the antenna explicitly states VHF support rather than assuming it — this is the quiet reason a perfectly good antenna gets everything except the one channel someone in the house cares about.
What to ignore on the box
Mile ratings. Marketing, not specification. They assume conditions you do not have.
“4K” and “HDTV” badges.An antenna is passive metal with no resolution at all. What decides whether you can watch a NextGen TV broadcast is the ATSC 3.0 tuner in your television or box, not the antenna — see our ATSC 3.0 explainer.
“Free channels forever” framing. True, and true of every antenna ever made. Broadcast television is free; that is not a feature of the product you are looking at.
The cheap way to do this properly
Buy the inexpensive indoor antenna first, even if you suspect you will need more. Put it as high as you can, as close to the window facing your transmitters as you can, and run your television’s channel scan. Move it, scan again — two or three positions is normal, and the difference between the best and worst spot in one room can be several channels.
If you get what you wanted, you are done for the price of a takeaway. If you are missing channels, you now know something a product listing could never have told you, and you can escalate to an attic or outdoor antenna with real information. That order of operations costs 35 dollars to be wrong and saves a roof install that was never needed.
Once it is up, how to set a TV antenna covers aiming it with the signal meter your television already has, and do indoor antennas work is the honest answer for anyone still deciding whether to bother.