Here is an easy to make simple Digital TV antenna that gets surprisingly good reception. I live 25 miles from the transmitter and I can get all the channels with just this antenna on the wall!
The quick instructions – cut a wire coat hanger to 28″, bend into a square 7″ on a side. Scrape or sand the ends to bare the metal and bend the ends into a loop to fit the bolts. Connect the lugs of the matching transformer to the ends of the coat hanger with the bolts, washers and nuts. Use a piece of coax cable to connect the transformer to the converter box or TV.
For best reception, mount the antenna to face the direction of the incoming TV signal and as high up as possible. Adjust the antenna for best signal. http://www.antennaweb.org/ will tell you where your Digital TV transmitting towers are.
- 1 wire coat hanger
- 1 Impedance matching transformer for TV use, 300 ohm to 75 ohm, $1.50 at Fry’s, $5.25 at Radio Shack.
- 2 bolts, 2 nuts and 4 washers, machine bolts 8-32 x 3/8″ long are good
This may be all the antenna you need! It works for me, I live in a major metropolitan area, 25 miles from the transmitting towers, flat terrain, no major obstructions (buildings or trees).
If you need a better antenna for a stronger signal, there are a lot of plans and demos on the Internet so you can build your own. Here are my instructions for the larger 4 bow tie antenna: http://www.markdigital.com/?p=10
As I was experimenting with antennas, the elements were always specified to be 7″. Below are a couple of designs. So I simplified the design to a square 7″ on a side and it works!
Four bow tie antenna:
Dual 4 segments antenna: