On-Line Encyclopedia - G

The Maui Communications Networks
On-Line Encyclopedia

Alphabetical List Of Definitions For Technical Terms

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GHz
"Gigahertz" 1-billion Hertz which is the same as 1-billion cycles per second. The unit of signal frequency is the "Hertz", where 1 Hz = 1 frequency cycle per second. 1000 Hertz is referred to as a "kilohertz" (kHz) and commercial AM radio broadcast stations operate in the range of 550 to 1600 kHz. 1,000,000 Hertz is referred to as a "megahertz" (MHz) and FM broadcast radio stations operate in the range of 88 to 108 MHz. When you get to 1-billion Hertz you may hear it called "one thousand megahertz" or, more correctly, "one gigahertz" (GHz). The generally accepted, correct way to write the three abbreviations is, "kHz", "MHz", and "GHz". There is no accepted reason why the Greek prefix receives a lower-case letter for "kHz", but is written with an upper-case letter for "MHz" and "GHz".
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