Band I is the name of a radio frequency range within the very high frequency part of the electromagnetic spectrum. Radio frequency ( RF) is a Frequency or rate of Oscillation within the range of about 3 Hz to 300 GHz Very high frequency (VHF is the Radio frequency range from 30 MHz to 300 MHz. The electromagnetic (EM spectrum is the range of all possible Electromagnetic radiation frequencies
Band I ranges from 47 to 88 MHz, and it is primarily used for radio and television broadcasting. The hertz (symbol Hz) is a measure of Frequency, informally defined as the number of events occurring per Second. Radio is the transmission of signals by Modulation of electromagnetic waves with frequencies below those of visible Light. Television ( TV) is a widely used Telecommunication medium for sending ( Broadcasting) and receiving moving Images, either monochromatic
Channel spacings vary from country to country, with spacings of 6, 7 and 8 MHz being common. The hertz (symbol Hz) is a measure of Frequency, informally defined as the number of events occurring per Second.
In the UK, Band I was originally used for monochrome 405-line television. Monochrome comes from the Greek μονόχρωμος ( monochromos) meaning “of one color” which is a combination The 405-line Monochrome analogue Television broadcasting system was the first fully electronic television system to be used in regular broadcasting Television ( TV) is a widely used Telecommunication medium for sending ( Broadcasting) and receiving moving Images, either monochromatic However this system was discontinued in the mid 1980s. Some European countries still use Band I for higher definition colour television, although this is now being gradually phased out.
In the United States, use of the band for colour television broadcasts is still widespread.
The band is subdivided into five channels for television broadcasting, each occupying 6 MHz (System M).
| Channel | Frequency Range |
|---|---|
| 2 | 54-60 MHz |
| 3 | 60-66 MHz |
| 4 | 66-72 MHz |
| 5 | 76-82 MHz |
| 6 | 82-88 MHz |
| 6A | 81. 5-87. 5 MHz |