How to Make an Amplified HDTV Antenna

What You'll Need
Measuring tape
Wood screws, 14 pieces
Wood saw
Insulated copper wire
Metal grate, 24 x 36 inches
Wire cutters or strippers
Wood board, 2 x 3 or 2 x 4 in size
Washers, 14 pieces
75 Ohm balun
Utility knife

Making your own amplified HDTV antenna is the best way to go if you want to save money. HDTV antennas are crucial for having a clear reception on your high-definition television systems as it is through them that signals are transmitted. With these devices around, you can expect a great improvement in the picture quality of your HDTV sets. Likewise, you will be able to watch shows in multiple channels without much signal interruption.

Step 1 - Measure, Mark, Cut, and Drill the Wood Board 

Get a piece of wood board and cut it into 40 or 22 inches long. Determine where its top front or top back should be and put labels on them. Lay the board flat and take measurements, dividing the length of the wood into four different sections. Drill two adjacent holes on each section. The holes should each be at least 1 inch from the edges of the board.

Step 2 - Attach Wires to the Board

Cut eight pieces of insulated copper wire, each 14 inches long. Bend them into a V-shape starting on the middle so that each leg will measure about 7 inches long. Bend them further using pliers to make a 3-inch gap between the ends of the legs. Peel away a piece of insulation at the center to expose raw wire. Attach these V wires into the holes of the mast using screws and washers. Start from the topmost end. Cut another 20-inch long insulated copper wire. Attach it to each of the screws on the board in a criss-cross pattern. Make sure that the portions of the wire that are attached to the screws are exposed or devoid of insulation. 

Step 3 - Assemble the Reflector

Flip the board, making its top back portion face upward. Place the metal grate on its center, laying it in a way that its length is parallel to the length of the board and that its end is even with the board's top end. Clamp the grate into the wood board by screwing down washers into it. Washers should be positioned at least 5 or 6 inches from each other starting from the topmost portion of the mast. Ensure that the screws are tightened. Now, you have a powerful reflector that can bring in a strong signal into your antenna.

Step 4 -  Attach the Balun 

Locate the wire on the center sections of the mast. Attach the balun into these wires, making sure that the two wires do not touch each other.

Step 5 - Attach the Antenna to the HDTV

Attach the connector of the balun to the coaxial cable on your HDTV. Test the reception. If reception still has not improved, check your antenna to see if all wires have been attached carefully. Tighten screws if needed.

Your home-made amplified HDTV antenna can work better if it is situated on an area away from building structures. For safety purposes, it also helps if the antenna is placed away from cables and electrical lines.