Exam Primer

Overview
1. Regulations and Policies
  • Authority and Regulations
  • Licence
  • License Penalties
  • Certificate
  • Operation, Repair
  • Content Restrictions
  • Operating Restrictions
  • Interference
  • Emergencies
  • Non-remuneration, Privacy
  • Call Signs
  • Other Countries
  • Frequency Bands
  • Power Allowed
  • unmodulated carriers, retransmission
  • amplitude modulation, frequency stability, me
  • International Telecommunication Union (ITU)
  • Exams
  • Antenna Structures
  • RF Field Strength
  • Resolving Complaints
  • 2. Operating and Procedures
  • VHF/UHF Repeaters - Voice
  • Phonetic Alphabet
  • Voice Operating Procedures
  • tuning, testing and dummy loads
  • Morse Code (CW) procedures
  • RST signal reporting, S meter
  • Q Signals
  • Emergency Operating Procedures
  • Record Keeping, Antenna Orientation and Maps
  • 3. Station Assembly, Practice and Safety
  • Layout of HF Stations
  • Layout of FM Transmitters
  • Layout of FM Receivers
  • Layout of CW Transmitters
  • Layout of SSB/CW receivers
  • Layout of SSB Transmitters
  • Layout of Digital Systems
  • Layout of Regulated Power Supplies
  • Layout of Yagi-Uda Antennas
  • Receiver Fundamentals
  • Transmitter, carrier, keying, AM
  • Carrier Suppression, SSB
  • Frequency and Phase Modulation
  • Station Accessories
  • Digital Modes
  • Batteries
  • Power Supplies
  • Electrical Safety
  • Antenna and Tower Safety
  • RF Exposure Safety
  • 4. Circuit Components
  • Amplifier Fundamentals
  • Diodes
  • Bipolar Transistors
  • Field-effect Transistors
  • Tiode Vacuum Tubes
  • Resister Color Codes
  • 5. Basic Electronics and Theory
  • Metric Prefixes
  • Basic Concepts
  • Circuits
  • Ohm's law
  • Series and Parallel Resistors
  • Power law, Resister Power Disipation
  • AC and frequency
  • Ratios, Logarithms and Decibels
  • Inductance and Capacitance
  • Reactance and Impedance
  • Magnetica and Transformers
  • Resonance and Tuned Circuits
  • Meters and Measurements
  • 6. Feedlines and Antenna Systems
  • Impedance and Feedlines
  • Balanced and Unbalanced feedlines
  • Feedlines and Connectors
  • Line Losses
  • Standing Wave Ratio
  • Impedance Matching
  • Isotropic Sources, Polarization
  • Wavelength vs Physical Length
  • Antenna Radiation Patterns
  • Vertical Antennas
  • Yagi Antennas
  • Wire Antennas
  • Quad/loop Antennas
  • 7. Radio Wave Propagation
  • Propogation Types
  • Ionospheric Regions
  • Hops and Skips
  • Ionosphere Issues
  • Solar Activity
  • MF and HF and Skywaves
  • VHF and UHF, Sporadic-E, Aurira, Ducting
  • Scatter - HF, VHF, UHF
  • 8. Interference and Suppression
  • Front-end overload
  • Audio Rectification, Bypass Capacitors, Ferri
  • Intermodulation, Spurious, Key-clicks
  • Harmonics, Splatter, Transmitter Adjustments
  • Filters
  • 6.9 Antenna Radiation Patterns

    Practice


    B-006-09-01
    What is a parasitic beam antenna?
    An antenna where the driven element obtains its radio energy by induction or radiation from director elements
    An antenna where all elements are driven by direct connection to the feed line
    An antenna where some elements obtain their radio energy by induction or radiation from a driven element
    An antenna where wave traps are used to magnetically couple the elements

    B-006-09-02
    How can the bandwidth of a parasitic beam antenna be increased?
    Use traps on the elements
    Use larger diameter elements
    Use tapered-diameter elements
    Use closer element spacing

    B-006-09-03
    If a slightly shorter parasitic element is placed 0.1 wavelength away from an HF dipole antenna, what effect will this have on the antenna's radiation pattern?
    A major lobe will develop in the horizontal plane, parallel to the two elements
    A major lobe will develop in the horizontal plane, toward the parasitic element
    A major lobe will develop in the vertical plane, away from the ground
    The radiation pattern will not be affected

    B-006-09-04
    If a slightly longer parasitic element is placed 0.1 wavelength away from an HF dipole antenna, what effect will this have on the antenna's radiation pattern?
    A major lobe will develop in the horizontal plane, parallel to the two elements
    A major lobe will develop in the vertical plane, away from the ground
    A major lobe will develop in the horizontal plane, away from the parasitic element, toward the dipole
    The radiation pattern will not be affected

    B-006-09-05
    The property of an antenna, which defines the range of frequencies to which it will respond, is called its:
    bandwidth
    front-to-back ratio
    impedance
    polarization

    B-006-09-06
    Approximately how much gain does a half-wave dipole have over an isotropic radiator?
    1.5 dB
    3.0 dB
    6.0 dB
    2.1 dB

    B-006-09-07
    What is meant by antenna gain?
    The numerical ratio of the signal in the forward direction to the signal in the back direction
    The numerical ratio of the amount of power radiated by an antenna compared to the transmitter output power
    The final amplifier gain minus the transmission line losses
    The numerical ratio relating the radiated signal strength of an antenna to that of another antenna

    B-006-09-08
    What is meant by antenna bandwidth?
    Antenna length divided by the number of elements
    The angle between the half- power radiation points
    The angle formed between two imaginary lines drawn through the ends of the elements
    The frequency range over which the antenna may be expected to perform well

    B-006-09-09
    In free space, what is the radiation characteristic of a half-wave dipole?
    Minimum radiation from the ends, maximum broadside
    Maximum radiation from the ends, minimum broadside
    Omnidirectional
    Maximum radiation at 45 degrees to the plane of the antenna

    B-006-09-10
    The gain of an antenna, especially on VHF and above, is quoted in dBi. The "i" in this expression stands for:
    isotropic
    ideal
    ionosphere
    interpolated

    B-006-09-11
    The front-to-back ratio of a beam antenna is:
    the forward power of the major lobe to the power in the backward direction both being measured at the 3 dB points
    the ratio of the maximum forward power in the major lobe to the maximum backward power radiation
    undefined
    the ratio of the forward power at the 3 dB points to the power radiated in the backward direction