Trail Life Communications Technology – Requirement 2

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Using a chart and/or text list of the US Radio Frequency Allocation from the US Department of Commerce, and information on the electromagnetic spectrum from NASA, do the following:

– NTIA Spectrum PDF

Electromagnetic Spectrum PDF

A. Define:

electromagnetic radiation : set of waves of an electromagnetic (EM) field, which propagate through space and carry momentum and electromagnetic radiant energy (Wikipedia)

frequency: most often measured in hertz (symbol: Hz), is the number of occurrences of a repeating event per unit of time. (Wikipedia)

radio frequency (RF) : is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency range from around 20 kHz to around 300 GHz (Wikipedia)

spectrum:  a condition that is not limited to a specific set of values but can vary, without gaps, across a continuum (Wikipedia)

B. Draw your own spectrum chart showing at least the following frequencies:

 human hearing (audio)
 human eyesight (visible light)
 alternating current (electric power for your home)
 AM and FM commercial broadcast radio
 public service (police and fire)
 and a least one amateur radio band