A loop antenna is a simple antenna design that has many attributes. It's compact, easy to make, and also is directional—you can rotate the antenna to improve reception of distant stations. Building a loop antenna only requires some simple materials and just a bit of your time. You'll enjoy the improved performance your loop antenna will provide on the FM frequency band.
- Skill level:
Things you need
- 30-inch length of12-gauge bare copper wire
- One-by-two inch block of wood
- Two 1/2-inch long wood screws
- Two washers, sized to fit over the threads of the screws
- Needle-nosed pliers
- 300- to 75-ohm antenna transformer
- Coaxial cable
Bend the 30-inch long piece of wire into a round loop. Bending the wire around a cylindrical object such as a bucket makes it easier to get a consistent shape.
Slide a washer over the threads of each of your screws, and screw the screws into the block of wood, one near each end of the block. Don't screw the screws in all the way yet, leave them with about 1/2 inch protruding.
Bend a small U shape into each end of the wire loop. Make the U just large enough to slip over the threads of the screws.
Slip the U shapes of the wire loop over the threads of the screws, behind the washers. Slip the two U-shaped tabs at the end of the antenna transformer under the washers, one to each screw. Tighten the screws, clamping the ends of the loop and antenna transformer together onto the block of wood.
Plug the end of your coaxial cable into the free end of the antenna transformer. Plug the other end into your radio's antenna input.
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