Homemade VHF Antennas
A VHF (very high frequency) antenna receives radio signals as electromagnetic waves and converts them into electric current, and vice versa. Unlike a traditional homemade aluminum-based antenna, it receives high-frequency channels and provides better quality to the users.
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Antenna Composition
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For constructing aerial tubing of the antenna, you can use aluminum or galvanized steel. These metals are cost-effective and have good conductivity of electromagnetic waves. The other components are copper wire, 35-by-25-inch plywood, 2-by-4-inch board, aluminum or steel coat hangers, a hammer, insulation tape, a wire cutter and wood screws.
Dipole Construction
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You need to construct a half-wave dipole by soldering the inner ends of the antenna's areal to a coaxial cable. Calculate the length of the antenna's areal by using the formula, l=486/f, where "I" is dipole length in feet and "f" is frequency in megahertz.
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Advantages
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VHF antennas can detect high-definition broadcasting channels that a traditional aluminum antenna may not detect.
Consideration
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Interference of communication devices such as mobile phones and walkie talkies can affect the signal quality.
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