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Band I is the name of a radio frequency range within the very high frequency part of the electromagnetic spectrum.

Band I ranges from 47 to 88 MHz, and it is primarily used for radio and television broadcasting.

Channel spacings vary from country to country, with spacings of 6, 7 and 8 MHz being common.

Contents

Worldwide Usage

In the UK, Band I was originally used for monochrome 405-line television; likewise, the French monochrome 819-line system used Band I. These two systems were both discontinued in the mid 1980s. Other European countries used and still use Band I for 625-line analogue television, first in monochrome and later in colour. This is now being gradually phased out with the introduction of digital television in the DVB-T standard, which is not defined for VHF Band I.

In the United States, use of this band for color television broadcasts is still widespread, though becoming less common with the digital television transition; digital television has problems with multipath interference, particularly in this band.

The tail end of this band, 87.5 to 88 MHz, is the front end of the FM radio band in the United States. The FCC will occasionally issue a license for 87.9 MHz (though it only does so on rare occurrences and special circumstances; KSFH is the only standalone station that uses 87.9 currently); 87.7, which is approximately the same frequency as the audio feed of channel 6, is used by some television licenses to broadcast primarily to radio, such as Pulse 87's stations.

Europe

The band is subdivided into three channels for television broadcasting, each occupying 7 MHz (System B).

Channel Frequency Range
2 47-54 MHz
2A 48.5-55.5 MHz
3 54-61 MHz
4 61-68 MHz

North America

The band is subdivided into five channels for television broadcasting, each occupying 6 MHz (System M).

Channel Frequency Range
1* 44-50 MHz
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

See also








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