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
  • 6.8 Wavelength vs Physical Length

    Practice


    B-006-08-01
    If an antenna is made longer, what happens to its resonant frequency?
    It decreases
    It increases
    It stays the same
    It disappears

    B-006-08-02
    If an antenna is made shorter, what happens to its resonant frequency?
    It stays the same
    It increases
    It disappears
    It decreases

    B-006-08-03
    The wavelength for a frequency of 25 MHz is:
    15 metres (49.2 ft)
    4 metres (13.1 ft)
    12 metres (39.4 ft)
    32 metres (105 ft)

    B-006-08-04
    The velocity of propagation of radio frequency energy in free space is:
    300 000 kilometres per second
    3000 kilometres per second
    150 kilometres per second
    186 000 kilometres per second

    B-006-08-05
    Adding a series inductance to an antenna would:
    increase the resonant frequency
    have little effect
    decrease the resonant frequency
    have no change on the resonant frequency

    B-006-08-06
    The resonant frequency of an antenna may be increased by:
    lowering the radiating element
    increasing the height of the radiating element
    shortening the radiating element
    lengthening the radiating element

    B-006-08-07
    The speed of a radio wave:
    is infinite in space
    is the same as the speed of light
    is always less than half speed of light
    varies directly with frequency

    B-006-08-08
    At the end of suspended antenna wire, insulators are used. These act to:
    limit the electrical length of the antenna
    increase the effective antenna length
    allow the antenna to be more easily held vertically
    prevent any loss of radio waves by the antenna

    B-006-08-09
    To lower the resonant frequency of an antenna, the operator should:
    shorten it
    lengthen it
    ground one end
    centre feed it with TV ribbon feeder

    B-006-08-10
    One solution to multiband operation with a shortened radiator is the "trap dipole" or trap vertical. These "traps" are actually:
    large wire-wound resistors
    a coil and capacitor in parallel
    coils wrapped around a ferrite rod
    hollow metal cans

    B-006-08-11
    The wavelength corresponding to a frequency of 2 MHz is:
    360 m (1181 ft)
    150 m (492 ft)
    1500 m (4921 ft)
    30 m (98 ft)