How does the gain of an ideal parabolic dish antenna change when the operating frequency is doubled?
How can linearly polarized Yagi antennas be used to produce circular polarization?
Where should a high Q loading coil be placed to minimize losses in a shortened vertical antenna?
Why should an HF mobile antenna loading coil have a high ratio of reactance to resistance?
What is a disadvantage of using a multiband trapped antenna?
What happens to the bandwidth of an antenna as it is shortened through the use of loading coils?
What is an advantage of using top loading in a shortened HF vertical antenna?
What happens as the Q of an antenna increases?
What is the function of a loading coil used as part of an HF mobile antenna?
What happens to feed point impedance at the base of a fixed length HF mobile antenna as the frequency of operation is lowered?
Which of the following types of conductors would be best for minimizing losses in a station's RF ground system?
Which of the following would provide the best RF ground for your station?
What usually occurs if a Yagi antenna is designed solely for maximum forward gain?