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
  • 6.13 Quad/loop Antennas

    Practice


    B-006-13-01
    What is a cubical quad antenna?
    A center-fed wire 1/2-electrical wavelength long
    A vertical conductor 1/4- electrical wavelength high, fed at the bottom
    Two or more parallel four- sided wire loops, each approximately one-electrical wavelength long
    Four straight, parallel elements in line with each other, each approximately 1/2- electrical wavelength long

    B-006-13-02
    What is a delta loop antenna?
    A type of cubical quad antenna, except with triangular elements rather than square
    A large copper ring or wire loop, used in direction finding
    An antenna system made of three vertical antennas, arranged in a triangular shape
    An antenna made from several triangular coils of wire on an insulating form

    B-006-13-03
    Approximately how long is each side of a cubical quad antenna driven element for 21.4 MHz?
    3.54 metres (11.7 feet)
    0.36 metres (1.17 feet)
    14.33 metres (47 feet)
    143 metres (469 feet)

    B-006-13-04
    Approximately how long is each side of a cubical quad antenna driven element for 14.3 MHz?
    21.43 metres (70.3 feet)
    5.36 metres (17.6 feet)
    53.34 metres (175 feet)
    7.13 metres (23.4 feet)

    B-006-13-05
    Approximately how long is each leg of a symmetrical delta loop antenna driven element for 28.7 MHz?
    2.67 metres (8.75 feet)
    7.13 metres (23.4 feet)
    10.67 metres (35 feet)
    3.5 metres (11.5 feet)

    B-006-13-06
    Which statement about two- element delta loops and quad antennas is true?
    They perform very well only at HF
    They compare favorably with a threeelement Yagi
    They are effective only when constructed using insulated wire
    They perform poorly above HF

    B-006-13-07
    Compared to a dipole antenna, what are the directional radiation characteristics of a cubical quad antenna?
    The quad has more directivity in both horizontal and vertical planes
    The quad has more directivity in the horizontal plane but less directivity in the vertical plane
    The quad has less directivity in the horizontal plane but more directivity in the vertical plane
    The quad has less directivity in both horizontal and vertical planes

    B-006-13-08
    Moving the feed point of a multielement quad antenna from a side parallel to the ground to a side perpendicular to the ground will have what effect?
    It will change the antenna polarization from vertical to horizontal
    It will significantly decrease the antenna feed point impedance
    It will change the antenna polarization from horizontal to vertical
    It will significantly increase the antenna feed point impedance

    B-006-13-09
    What does the term "antenna front-toback ratio" mean in reference to a delta loop antenna?
    The relative position of the driven element with respect to the reflectors and directors
    The power radiated in the major radiation lobe compared to the power radiated in exactly the opposite direction
    The power radiated in the major radiation lobe compared to the power radiated 90 degrees away from that direction
    The number of directors versus the number of reflectors

    B-006-13-10
    The cubical "quad" or "quad" antenna consists of two or more square loops of wire. The driven element has an approximate overall length of:
    three-quarters of a wavelength
    one wavelength
    two wavelengths
    one-half wavelength

    B-006-13-11
    The delta loop antenna consists of two or more triangular structures mounted on a boom. The overall length of the driven element is approximately:
    one-quarter of a wavelength
    one wavelength
    two wavelengths
    one-half of a wavelength