Constructing an HDTV antenna is as simple as assembling a few basic items, several of which can be found around the home with a few coming from the store. However, the out-of-pocket expense is minimal. By constructing a multi-directional antenna, you will be able to receive the free local HD broadcast in your area coming from various directions. So if you live close to several cities, you could have access to more channels based on the reception.
Instructions
1. Measure and mark a section of the 3/4-inch plywood to 4 inches wide by 40 inches long. Cut out the piece of plywood to this measurement using the saw. This will become the mast, to which the elements will connect.
2. Lay the cut board (mast) flat on the table. Beginning at one end, measure down 1/2 inch from the right edge and make a mark at the 4, 8, 12, and 16-inch measurements. Repeat this step to make four more marks that are down the left edge of the board, using the same measurements.
3. Cut the hooks off each coat hanger and straighten the wires. Sand each of the wires to remove any paint or coatings, using the sandpaper. The wires should be shiny and you should see the bare metal when complete.
4. Measure and cut 8 pieces of wire that are 14 inches long each. Using the pliers, bend each of the 14-inch wires in the middle, into the shape of a V, so that each leg is 7 inches long. Bend each wire into the shape of a V until there is a 3-inch spread between the 2 ends of the wires.
5. Turn the V-shaped wires horizontal and mount one V to each of the marks on the mast from step 2. Attach them to the mast by screwing down a washer into the bend of the V and clamping it against the board. Attach them so the ends of the V point away from the mast.
6. Attach the end of a new wire under the screw in the bottom right corner of the set of screws on the mast. Cross the wire over and attach it underneath the 2 middle screws on the left side. Cross the wire back over and attach it under the screw in the top right corner. Repeat this step to attach a similar wire starting with the screw in the bottom left corner and finishing up with the screw in the top left corner.
7. Apply electrical tape to the 2 wires where they cross each other, in the center of the mast, to prohibit them from making contact.
8. Connect the balun to the third set of screws from the top of the mast. Attach one wire from the balun to the screw on the left and the remaining wire to the screw on the right. The balun is where you will connect the cable from the TV directly to the antenna, and is responsible for matching the impedance of the 75 Ohm cable to the antenna.
Tags: inches long, Attach them, Attach wire, coming from, Cross wire, from mast, from mast Attach
