Exam Primer

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
  • 8.2 Audio Rectification, Bypass Capacitors, Ferri


    What devices would you install to reduce or eliminate audio-frequency interference to home entertainment systems?
    Bypass resistors
    Metal-oxide varistors
    Bypass capacitors
    Bypass inductors

    What should be done if a properly operating amateur station is the cause of interference to a nearby telephone?
    Ground and shield the local telephone distribution amplifier
    Stop transmitting whenever the telephone is in use
    Ask the telephone company to install RFI filters
    Make internal adjustments to the telephone equipment

    What sound is heard from a publicaddress system if audio rectification of a nearby single-sideband phone transmission occurs?
    Clearly audible speech from the transmitter's signals
    On-and-off humming or clicking
    Distorted speech from the transmitter's signals
    A steady hum whenever the transmitter's carrier is on the air

    What sound is heard from a publicaddress system if audio rectification of a nearby CW transmission occurs?
    Audible, possibly distorted speech
    Muffled, severely distorted speech
    A steady whistling
    On-and-off humming or clicking

    How can you minimize the possibility of audio rectification of your transmitter's signals?
    By installing bypass capacitors on all power supply rectifiers
    By using CW emission only
    By ensuring that all station equipment is properly grounded
    By using a solid-state transmitter

    An amateur transmitter is being heard across the entire dial of a broadcast receiver. The receiver is most probably suffering from:
    harmonics interference from the transmitter
    cross-modulation or audio rectification in the receiver
    poor image rejection
    splatter from the transmitter

    Cross-modulation is usually caused by:
    rectification of strong signals
    harmonics generated at the transmitter
    improper filtering in the transmitter
    lack of receiver sensitivity and selectivity

    What device can be used to minimize the effect of RF pickup by audio wires connected to stereo speakers, intercom amplifiers, telephones, etc.?
    Ferrite core

    Stereo speaker leads often act as antennas to pick up RF signals. What is one method you can use to minimize this effect?
    Shorten the leads
    Lengthen the leads
    Connect the speaker through an audio attenuator
    Connect a diode across the speaker

    One method of preventing RF from entering a stereo set through the speaker leads is to wrap each of the speaker leads around a:
    copper bar
    iron bar
    ferrite core
    wooden dowel

    Stereo amplifiers often have long leads which pick up transmitted signals because they act as:
    transmitting antennas
    RF attenuators
    frequency discriminators
    receiving antennas