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
  • 6.12 Wire Antennas

    Practice


    B-006-12-01
    If you made a half-wavelength dipole antenna for 28.550 MHz, how long would it be?
    10.5 metres (34.37 ft)
    28.55 metres (93.45 ft)
    5.08 metres (16.62 ft)
    10.16 metres (33.26 ft)

    B-006-12-02
    What is one disadvantage of a random wire antenna?
    It usually produces vertically polarized radiation
    It must be longer than 1 wavelength
    You may experience RF feedback in your station
    You must use an inverted T matching network for multi-band operation

    B-006-12-03
    What is the low angle radiation pattern of an ideal half-wavelength dipole HF antenna installed parallel to the earth?
    It is a figure-eight, perpendicular to the antenna
    It is a circle (equal radiation in all directions)
    It is two smaller lobes on one side of the antenna, and one larger lobe on the other side
    It is a figure-eight, off both ends of the antenna

    B-006-12-04
    The impedances in ohms at the feed point of the dipole and folded dipole are, respectively:
    73 and 150
    73 and 300
    52 and 100
    52 and 200

    B-006-12-05
    A dipole transmitting antenna, placed so that the ends are pointing North/South, radiates:
    mostly to the South and North
    mostly to the South
    equally in all directions
    mostly to the East and West

    B-006-12-06
    How does the bandwidth of a folded dipole antenna compare with that of a simple dipole antenna?
    It is essentially the same
    It is less than 50%
    It is 0.707 times the bandwidth
    It is greater

    B-006-12-07
    What is a disadvantage of using an antenna equipped with traps?
    It is too sharply directional at lower frequencies
    It will radiate harmonics
    It must be neutralized
    It can only be used for one band

    B-006-12-08
    What is an advantage of using a trap antenna?
    It may be used for multi- band operation
    It has high directivity at the higher frequencies
    It has high gain
    It minimizes harmonic radiation

    B-006-12-09
    The "doublet antenna" is the most common in the amateur service. If you were to cut this antenna for 3.75 MHz, what would be its approximate length?
    38 meters (125 ft.)
    32 meters (105 ft.)
    45 meters (145 ft.)
    75 meters (245 ft.)