T9A - Antennas and feed lines
Technician Class
Antennas: vertical and horizontal polarization, concept of antenna gain, definition and types of beam antennas, antenna loading, common portable and mobile antennas, relationships between resonant length and frequency, dipole pattern
12 questions
What is a beam antenna?
Which of the following describes a type of antenna loading?
Which of the following describes a simple dipole oriented parallel to Earth's surface?
What is a disadvantage of the short, flexible antenna supplied with most handheld radio transceivers, compared to a full-sized quarter-wave antenna?
Which of the following increases the resonant frequency of a dipole antenna?
Which of the following types of antenna offers the greatest gain?
What is a disadvantage of using a handheld VHF transceiver with a flexible antenna inside a vehicle?
What is the approximate length, in inches, of a quarter-wavelength vertical antenna for 146 MHz?
What is the approximate length, in inches, of a half-wavelength 6 meter dipole antenna?
In which direction does a half-wave dipole antenna radiate the strongest signal?
What is antenna gain?
What is an advantage of a 5/8 wavelength whip antenna for VHF or UHF mobile service?