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The VHF band is further divided into two frequency ranges: VHF low band between 54 and 88 MHz, containing channels 2 through 6, and VHF high band between 174 and 216 MHz, containing channels 7 through 13. The wide spacing between these frequency bands is responsible for the complicated design of rooftop TV antennas.
TV network affiliations were difficult to get in many locations; the UHF stations with major-network affiliation would often lose these affiliations in favor of any viable new VHF TV station that entered the same market. Of the 82 new UHF-TV stations in the United States broadcasting as of June 1954, only 24 of them remained a year later. [19]
Channel A video carrier is the same as Channel E2 audio carrier and thus it used to be common that the audio from a distant TV station on channel E2 received via Sporadic E interferes with Channel A video and vice versa. Channel C audio carrier's frequency falls into the FM band in Europe, and is also identical to American A6 channel audio.
(with a -TV suffix if the analog station had this suffix, without the -TV suffix if the analog station didn't have it). Stations could optionally choose to keep the -DT suffix. [9] Most stations did not keep the -DT suffix. [10] For US analog stations, the -TV suffix was required if there was a radio station with the same three- or four-letter ...
Very high frequency (VHF) is the ITU designation [1] [2] ... In addition, by 1985 the federal government decided new TV stations are to be broadcast on the UHF band.
According to the FCC, as of March 31, 2011, there are 1022 UHF commercial television stations, 360 VHF commercial television stations, 285 UHF educational television stations and 107 VHF educational television stations, plus 439 Class A UHF television stations, 76 Class A VHF television stations, 3043 UHF television translators, 1411 VHF television translators, 1656 UHF low-power television ...
In most countries, television broadcasting is allowed in the very high frequency (VHF) band from 47 to 68 MHz, called VHF low band or band I in Europe; 174 to 216 MHz, called VHF high band or band III in Europe, and in the ultra high frequency (UHF) band from 470 to 698 MHz, called band IV and V in Europe. [7]
High frequency (HF) is the ITU designation [1] [2] for the band of radio waves with frequency between 3 and 30 megahertz (MHz). It is also known as the decameter band or decameter wave as its wavelengths range from one to ten decameters (ten to one hundred meters).