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Identify the correct group of propagation modes and impediments which impact unguided signal transmissions.

Low SNR is preferred in a communications link, since it means that the noise will also be low.

Using a direct sequence spread spectrum (DSSS) technique spreads a narrow band channel so that it occupies greater frequency spectrum.  By doing this, the signal has greater immunity from narrow band noise. 

A signal has a frequency range from 30MHz to 100,000 kHz.  What is the frequency bandwidth?

Determine the data rate possible given 64-QAM modulation where M=64, and baud rate is 4800 baud.

1,000,000 Hz (1E6) is equivalent to:

Given the following parameters, determine the correct sinusoidal equation for:  f=3kHz, A=10v, φ (phase angle)=+π/4 radians. 

The period of a carrier wave is T=3E-6 seconds.  Determine the frequency and wavelength of the carrier wave.

Analog virtual circuits enable several analog users to share a common physical link.

By viewing a signal in the frequency domain, you can determine the amplitude, signal frequency and frequency bandwidth of the signal.