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Old 07-05-2009, 12:16 PM   #7 (permalink)
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Originally Posted by Piggie View Post
The length of the element is inversely proportional to the frequency. The higher the frequency the shorter the antenna elements, having no correlation to power. VHF has the best reception on larger elements because it's wavelength is longer, taking a longer element for resonant reception, not because they are weaker.
The best way to visualize this is by looking at a traditional, full pipe organ in a church. The pipes producing the lowest bass notes -- the ones that seemingly make the whole place vibrate -- are several inches in diameter and many feet long; several octaves higher, at the top of the scale, the pipes are just a few millimeters across and mere inches in length. The same principle holds true for antennas: A dipole tuned to receive channel 2 is about 8 feet long; at channel 52, the correct length is less than 8 inches. That's why indoor antennas have two whip elements for VHF and a single loop for UHF.
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