How to Install an Outdoor HDTV Antenna

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An outdoor HDTV (high-definition television) antenna provides a more stable and consistent signal than that of an indoor antenna. Installing a HDTV antenna designed for outdoor use requires a few hardware supplies and some tools most people already have on hand. An outdoor TV bracket that can accommodate the HDTV antenna is also needed. This can be acquired from a hardware store or from some satellite-supply stores. A coaxial cable long enough to span the distance between the antenna and the television also is needed.

Things You'll Need

  • Outdoor TV bracket
  • Phillips screwdriver
  • Silicone sealant
  • Coaxial cable, 100 feet
  • Nail gun
  • "U" clamp nails
  • Portable drill
  • 2-inch drill bit
  • HDTV
  • Stand the outdoor TV bracket on the roof in a location free of obstructions and with an open view of the sky. Screw the base of the outdoor TV bracket into the roof with roofing screws, using a Phillips screwdriver.

  • Apply silicone sealant on and around the roofing screws to seal the holes. Let the silicone sealant set for an hour before reapplying sealant again. Let the sealant set for an hour before proceeding.

  • Unlock the set screws at the top of the outdoor TV bracket with the Phillips screwdriver. Insert the pole at the bottom of the outdoor HDTV antenna into the top of the outdoor TV bracket. Push the pole all the way into the hole at the top of the bracket.

  • Rotate the outdoor TV antenna so that the rods or panel at the top are facing in the general direction of the TV broadcast towers that will be providing the free high-definition TV signal. Lock down the set screws.

  • Screw one end of the coaxial cable into the coax output on the outdoor HDTV antenna. Snake the coaxial cable across the roof and over to the wall where there is a window leading into the house. Affix the coaxial cable to the roof with "U" clamp nails from a nail gun.

  • Drop the coaxial cable over the roof and down the wall. Make a small hole through the wall by the window with portable power drill. Pull the free end of the coaxial cable through the hole and inside the house.

  • Run the coaxial cable along the baseboard of the wall to the high-definition television (HDTV). Screw the free end of the coaxial cable into the coax input on the back of the HDTV.

  • Affix the coaxial cable to the baseboard of the wall with "U" clamp nails from the nail gun. Apply silicone sealant to the hole by the window on the inside and outside to seal it.

Tips & Warnings

  • Access and use of the roof must be approved first if you are installing the HDTV antenna on the roof of an apartment building or condo.
  • Proper installation of the outdoor HDTV antenna must take into account, and so plan for, the possibility of a lightning strike. A professional TV installer can be questioned regarding this.

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