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Midterm Activity #1

Across
Is a flow or transfer of energy in the form of oscillation
It is defined as how radio signals radiate
These are waves used to image bone structures
A good rule of thumb where __ HF frequencies work best during night time.
FM modulation suffers from ___.
How many types of waves/radiation are there in a electromagnetic spectrum?
Down
A symbol used for wavelength
Skywaves make ___ communications possible
It refers to the direction of electric field.
These are waves that can travel in a vacuum
Type of modulation used for communication in aviation
At high frequencies, ___ polarization is avoided.
Type of waves that can be found in the ocean
Unit measurement for bandwidth
A frequency band used for short range communications