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Cisco CCNA 1.11
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Frequency or Amplitude?

A higher note, a louder one, AM radio, FM radio: did the frequency change or the amplitude?

⚑ Complete this interactive to capture a CTF flag worth 5 points.

About this interactive

Two of the things you can control about a wave (phase, the third, is not in this lesson): - **Frequency:** cycles per second, in hertz (Hz). One cycle is a full swing out, back in and home again. Higher frequency, higher pitch; lower frequencies travel farther and through more obstacles. Frequency modulation (FM) carries data by varying it. - **Amplitude:** the size of each cycle. With sound, it is loudness: the same note, louder or quieter. Amplitude modulation (AM) carries data by varying it. Electromagnetic waves are not mechanical, but they behave the same way.

What you'll learn

Aligned to

Cisco CCNA
1.11 Describe wireless principles

Key terms

Frequency
A measurement of cycles per second, expressed in hertz (Hz), that determines the behavior and application of a wave signal.
Amplitude
The magnitude or strength of a wave signal, representing how loud or powerful the wave is independent of its frequency.
Amplitude Modulation
AM
A method of transmitting data by varying the amplitude of an electromagnetic wave while keeping the frequency constant.
Frequency Modulation
FM
A method of transmitting data by varying the frequency of an electromagnetic wave while keeping the amplitude constant.

Topics

Frequency Amplitude Hertz Modulation Interactive Streak Sort

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