Which matching system for Yagi antennas requires the driven element to be insulated from the boom?

1. A Gamma
2. B Beta or hairpin
3. C Shunt-fed
4. D T-match

What antenna matching system matches coaxial cable to an antenna by connecting the shield to the center of the antenna and the conductor a fraction of a wavelength to one side?

1. A Gamma match
2. B Delta match
3. C T-match
4. D Stub match

What matching system uses a short length of transmission line connected in parallel with the feed line at or near the feed point?

1. A Gamma match
2. B Delta match
3. C T-match
4. D Stub match

What is the purpose of the series capacitor in a gamma match?

1. A To provide DC isolation between the feed line and the antenna
2. B To cancel unwanted inductive reactance
3. C To provide a rejection notch that prevents the radiation of harmonics
4. D To transform the antenna impedance to a higher value

What Yagi driven element feed point impedance is required to use a beta or hairpin matching system?

1. A Capacitive (driven element electrically shorter than 1/2 wavelength)
2. B Inductive (driven element electrically longer than 1/2 wavelength)
3. C Purely resistive
4. D Purely reactive

Which of these transmission line impedances would be suitable for constructing a quarter-wave Q-section for matching a 100-ohm feed point impedance to a 50-ohm transmission line?

1. A 50 ohms
2. B 62 ohms
3. C 75 ohms
4. D 90 ohms

What parameter describes the interaction of a load and transmission line?

1. A Characteristic impedance
2. B Reflection coefficient
3. C Velocity factor
4. D Dielectric constant

What is a use for a Wilkinson divider?

1. A To divide the operating frequency of a transmitter signal so it can be used on a lower frequency band
2. B To feed high-impedance antennas from a low-impedance source
3. C To divide power equally between two 50-ohm loads while maintaining 50-ohm input impedance
4. D To divide the frequency of the input to a counter to increase its frequency range

Which of the following is used to shunt feed a grounded tower at its base?

1. A Double-bazooka match
2. B Beta or hairpin match
3. C Gamma match
4. D All these choices are correct

What is the purpose of using multiple driven elements connected through phasing lines?

1. A To control the antenna's radiation pattern
2. B To prevent harmonic radiation from the transmitter
3. C To allow single-band antennas to operate on other bands
4. D To create a low-angle radiation pattern