It may have been this page, though I&#x27;m pretty sure the resource I used told me what length to cut it. <a href="http:&#x2F;&#x2F;www.diytvantennas.com&#x2F;dipole.php" rel="nofollow">http:&#x2F;&#x2F;www.diytvantennas.com&#x2F;dipole.php</a><p>Still, we can figure this out: Wikipedia says North American UHF frequencies are on average 680MHz across all channels, which corresponds to a wavelength of about 44cm. A folded dipole needs to have a length half of that, so we want a 22cm antenna when folded, plus about a 1cm gap.