T9A01:

What is a beam antenna?

1. An antenna built from aluminum I-beams
2. An omnidirectional antenna invented by Clarence Beam
3. An antenna that concentrates signals in one direction
4. An antenna that reverses the phase of received signals

T9A02:

Which of the following describes a type of antenna loading?

1. Inserting an inductor in the radiating portion of the antenna to make it electrically longer
2. Inserting a resistor in the radiating portion of the antenna to make it resonant
3. Installing a spring in the base of a mobile vertical antenna to make it more flexible
4. Strengthening the radiating elements of a beam antenna to better resist wind damage

T9A03:

Which of the following describes a simple dipole oriented parallel to the Earth's surface?

1. A ground-wave antenna
2. A horizontally polarized antenna
3. A rhombic antenna
4. A vertically polarized antenna

T9A04:

What is a disadvantage of the "rubber duck" antenna supplied with most handheld radio transceivers when compared to a full-sized quarter-wave antenna?

1. It does not transmit or receive as effectively
2. It transmits only circularly polarized signals
3. If the rubber end cap is lost, it will unravel very easily
4. All of these choices are correct

T9A05:

How would you change a dipole antenna to make it resonant on a higher frequency?

1. Lengthen it
2. Insert coils in series with radiating wires
3. Shorten it
4. Add capacitive loading to the ends of the radiating wires

T9A06:

What type of antennas are the quad, Yagi, and dish?

1. Non-resonant antennas
2. Log periodic antennas
3. Directional antennas
4. Isotropic antennas

T9A07:

What is a disadvantage of using a handheld VHF transceiver, with its integral antenna, inside a vehicle?

1. Signals might not propagate well due to the shielding effect of the vehicle
2. It might cause the transceiver to overheat
3. The SWR might decrease, decreasing the signal strength
4. All of these choices are correct

T9A08:

What is the approximate length, in inches, of a quarter-wavelength vertical antenna for 146 MHz?

1. 112
2. 50
3. 19
4. 12

T9A09:

What is the approximate length, in inches, of a half-wavelength 6 meter dipole antenna?

1. 6
2. 50
3. 112
4. 236

T9A10:

In which direction does a half-wave dipole antenna radiate the strongest signal?

1. Equally in all directions
2. Off the ends of the antenna
3. Broadside to the antenna
4. In the direction of the feed line

T9A11:

What is the gain of an antenna?

1. The additional power that is added to the transmitter power
2. The additional power that is lost in the antenna when transmitting on a higher frequency
3. The increase in signal strength in a specified direction compared to a reference antenna
4. The increase in impedance on receive or transmit compared to a reference antenna

T9A12:

What is an advantage of using a properly mounted 5/8 wavelength antenna for VHF or UHF mobile service?

1. It has a lower radiation angle and more gain than a 1/4 wavelength antenna
2. It has very high angle radiation for better communicating through a repeater
3. It eliminates distortion caused by reflected signals
4. It has 10 times the power gain of a 1/4 wavelength design