Why are received spread spectrum signals resistant to interference?
What spread spectrum communications technique uses a high speed binary bit stream to shift the phase of an RF carrier?
How does the spread spectrum technique of frequency hopping work?
What is the primary effect of extremely short rise or fall time on a CW signal?
What is the most common method of reducing key clicks?
Which of the following indicates likely overmodulation of an AFSK signal such as PSK or MFSK?
What is a common cause of overmodulation of AFSK signals?
What parameter might indicate that excessively high input levels are causing distortion in an AFSK signal?
What is considered a good minimum IMD level for an idling PSK signal?
What are some of the differences between the Baudot digital code and ASCII?
What is one advantage of using ASCII code for data communications?
What is the advantage of including a parity bit with an ASCII character stream?