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
  • 3.10 Receiver Fundamentals

    Practice


    B-003-10-01
    Which list of emission types is in order from the narrowest bandwidth to the widest bandwidth?
    CW, SSB voice, RTTY, FM voice
    CW, FM voice, RTTY, SSB voice
    CW, RTTY, SSB voice, FM voice
    RTTY, CW, SSB voice, FM voice

    B-003-10-02
    The figure in a receiver's specifications which indicates its sensitivity is the:
    signal plus noise to noise ratio
    audio output in watts
    bandwidth of the IF in kilohertz
    number of RF amplifiers

    B-003-10-03
    If two receivers of different sensitivity are compared, the less sensitive receiver will produce:
    a steady oscillator drift
    more than one signal
    less signal or more noise
    more signal or less noise

    B-003-10-04
    Which of the following modes of transmission is usually detected with a product detector?
    Double sideband full carrier
    Frequency modulation
    Pulse modulation
    Single sideband suppressed carrier

    B-003-10-05
    A receiver designed for SSB reception must have a BFO (beat frequency oscillator) because:
    it beats with the received carrier to produce the other sideband
    it reduces the passband of the IF stages
    the suppressed carrier must be replaced for detection
    it phases out the unwanted sideband signal

    B-003-10-06
    A receiver receives an incoming signal of 3.54 MHz, and the local oscillator produces a signal of 3.995 MHz. To which frequency should the IF be tuned?
    7.435 MHz
    3.995 MHz
    455 kHz
    3.54 MHz

    B-003-10-07
    What kind of filter would you use to attenuate an interfering carrier signal while receiving an SSB transmission?
    A notch filter
    A band pass filter
    An all pass filter
    A pi-network filter

    B-003-10-08
    The three main parameters against which the quality of a receiver is measured are:
    selectivity, stability and frequency range
    sensitivity, stability and crossmodulation
    sensitivity, selectivity and image rejection
    sensitivity, selectivity and stability

    B-003-10-09
    A communications receiver has four filters installed in it, one at 250 Hz, one at 500 Hz, one at 2.4 kHz, and one at 6 kHz. If you were listening to single sideband, which filter would you utilize?
    250 Hz
    2.4 kHz
    6 kHz
    500 Hz

    B-003-10-10
    A communications receiver has four filters installed in it, one at 250 Hz, one at 500 Hz, one at 2.4 kHz and one at 6 kHz. You are copying a CW transmission and there is a great deal of interference. Which one of the filters would you choose?
    500 Hz
    2.4 kHz
    6 kHz
    250 Hz

    B-003-10-11
    Selectivity can be placed in the audio stages of a receiver by the utilization of RC active or passive audio filters. If you were to copy CW, which of the following bandpasses would you choose?
    2100 - 2300 Hz
    300 - 2700 Hz
    750 - 850 Hz
    100 - 1100 Hz