Introduction: Homemade TV Antenna
This TV antenna is not only omnidirectional, but also compatible with the new digital television. I actually get more stations with the new digital television signals than the old system. I get 35 channels and I an a long way from any large city. Some of the stations are over 60 miles away.
Construction is simple using copper tubing, PVC pipe and minimal tools. Tools include a hack saw, drill (hand or electric) screw driver and tape measure.
Step 1: Making the Antenna Step 1
Start with some 3/8 or 1/2 inch copper tubing. Bend a half circle in a 26 inch diameter with an additional 1 inch extra on each end. Flatten the inch on the ends and bend them OUT. Now make another half circle and bend the ends IN.
Step 2: Step 2
Take a 1/2 or 3/4 inch PVC cross (depending if you used 3/8 or 1/2 inch copper tubing). add a piece of PVC to each connection so you can bolt the flattened edges to two of the PVC ends and the middle will fit into a notch to support it. Notice the two pieces of copper tubing do NOT come into electrical contact with each other except for the 300 ohm matching transformer.
Bolt the cross to a 2" PVBC end cap. Use a lock washer or double nuts so it doesn't loosen up. Glue the cap to a 20 foot piece of 2" PVC pipe.
Connect a 300 ohm matching transformer to the two pieced of copper tubing as in the picture. Connect cable to transformer, tape and run down the 2" PVC pole.
Drive a piece of pipe in t ground with about a foot above the ground and set the antenna mast over it and firmly mount the mast at roof level. As long as you mount it at the edge of the roof and don't go over 20 feet you don't need guy wires. if you go higher I would suggest adding some guy wires.
Trees between you and the station could reduce the signal so you may have to go above trees for log distance stations.
If you use a metal pole, it should be grounded to the ground rod by your electric meter.