1 Cydü per second = 1 Hz 1000 Cycles per second = 1 kHz i,000,000 Cycles per second = 1 MHz 1,000,000,000 Cycles per second = 1 GHz

Wireless signals cycle back and forth so quickly—millions of times each second—that the following abbrev i ation s are usea to seecify thei r frequency:

• Kilohertz (kHz): Thousands of cycles per second t hegahertz (MHz): Milli ons of cycles per second

• Gigahertz (GHz): Billions of cycles per second

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