For television, this spectrum is divided into distinct frequency bands, with very high frequency (VHF) and ultra high frequency (UHF) being the primary ranges for over-the-air transmission. UHF frequencies, operating at wavelengths around half those of VHF, allow for smaller, more efficient antennas and are less likely to suffer from certain types of interference.
Understanding Virtual Channel Numbers and Broadcast TV Frequencies
The physical characteristics of these frequencies mean that VHF waves travel farther but are more susceptible to interference from structures, whereas UHF signals offer better quality and capacity but generally have a shorter range. VHF operates in two bands, low-VHF (channels 2-6) and high-VHF (channels 7-13), while UHF covers the higher channels, ranging from 14 to 36.
Importantly, the transition also involved a significant reallocation of spectrum, known as the broadcast incentive auction. In this process, broadcasters voluntarily relinquished some of their UHF frequencies, primarily in the 600 MHz band, which were then sold to telecommunications companies for wireless broadband services.
Understanding Virtual Channel Numbers and Broadcast TV Frequencies
Understanding this spectrum is essential for grasping how over-the-air television continues to function alongside streaming services. UHF: Technical Differences The technical divergence between VHF and UHF frequencies dictates their real-world performance.
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