Which of the following describes a simple dipole mounted so the conductor is parallel to the Earth's surface?
C.
In which direction is the radiation strongest from a half-wave dipole antenna in free space?
C.
What is the approximate length, in inches, of a 6 meter 1/2-wavelength wire dipole antenna?
C.
How would you change a dipole antenna to make it resonant on a higher frequency?
B.
Which of the following is true regarding vertical antennas?
A.
What is the approximate length, in inches, of a quarter-wavelength vertical antenna for 146 MHz?
B.
What type of antennas are the quad, Yagi, and dish?
B.
What is a beam antenna?
A.
Which of the following methods is used to locate sources of noise interference or jamming?
B.
Which of these items would be useful for a hidden transmitter hunt?
D.
When using a directional antenna, how might your station be able to access a distant repeater if buildings or obstructions are blocking the direct line of sight path?
B.
What is meant by the gain of an antenna?
B.
What antenna polarization is normally used for long-distance weak-signal CW and SSB contacts using the VHF and UHF bands?
C.
What can happen if the antennas at opposite ends of a VHF or UHF line of sight radio link are not using the same polarization?
C.
Which of the following is a common use of coaxial cable?
A.
Why is coaxial cable used more often than any other feedline for amateur radio antenna systems?
B.
What is the impedance of the most commonly used coaxial cable in typical amateur radio installations?
A.
What generally happens as the frequency of a signal passing through coaxial cable is increased?
C.
Which of the following is true of PL-259 type coax connectors?
B.
Which of the following connectors is most suitable for frequencies above 400 MHz?
D.
What is a disadvantage of "air core" coaxial cable when compared to foam or solid dielectric types?
C.
Which of the following is the most common cause for failure of coaxial cables?
D.
Why should coax connectors exposed to the weather be sealed against water intrusion?
B.
Why should the outer jacket of coaxial cable be resistant to ultraviolet light?
A.
What electrical difference exists between the smaller RG-58 and larger RG-8 coaxial cables?
C.
Which of the following types of feedline has the lowest loss at VHF and UHF?
A.
Which of the following instruments can be used to determine if an antenna is resonant at the desired operating frequency?
D.
What, in general terms, is standing wave ratio (SWR)?
C.
Why is it important to have a low SWR in an antenna system that uses coaxial cable feedline?
B.
What reading on an SWR meter indicates a perfect impedance match between the antenna and the feedline?
B.
What is the approximate SWR value above which the protection circuits in most solid-state transmitters begin to reduce transmitter power?
A.
What does an SWR reading of 4:1 mean?
D.
What might cause erratic changes in SWR readings?
A.
What instrument other than an SWR meter could you use to determine if a feedline and antenna are properly matched?
A.
What happens to power lost in a feedline?
C.
What does an antenna tuner do?
A.
If figure T5 represents a transceiver in which block 1 is the transmitter portion and block 3 is the receiver portion, what is the function of block 2?
