Before your TV antenna stops working, there are a few ways to tell it’s starting to break. Some common signs that your antenna needs repair include:

• A repetitive “no signal” issue

• A redundant “searching” issue

• Increased signal issues during a cloudy or rainy day

• A sudden drop in signal strength, regardless of the weather

If you’re experiencing these problems, you’ll want to ensure that your cables are still in good shape and have not deteriorated. In addition, check to make sure that your cables are firmly in place at the wall outlet. Finally, check the position of your antenna to ensure there are no obstructions in its path. If you’ve checked your antenna thoroughly and are still having these problems, a repair is most likely needed by an antenna technician. 

Yes, in general, raising your TV antenna will improve your reception. Besides raising the location of your antenna, you should try putting it by a window. In fact, you can have the same antenna but get double the channels or more if it's in the best location. The highest spot to put a TV antenna will be on your roof, and the tallest type of outdoor antenna is a tower.

DIY is possible for minor adjustments, but professionals ensure proper alignment and signal strength.

Coax cable connects to your television, modem, or cable box. Look for a female coax connection on these devices. Your coax cable will connect to any of these. The other end of the wire runs to the service connection coming into the house.