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
6.1 Impedance and Feedlines
Practice
B-006-01-01
What connects your transceiver to your antenna?
The power cord
A ground wire
A feed line
A dummy load
B-006-01-02
The characteristic impedance of a transmission line is determined by the:
length of the line
physical dimensions and relative positions of the conductors
frequency at which the line is operated
load placed on the line
B-006-01-03
The characteristic impedance of a 20 metre piece of transmission line is 52 ohms. If 10 metres were cut off, the impedance would be:
52 ohms
26 ohms
39 ohms
13 ohms
B-006-01-04
The impedance of a coaxial line:
can be the same for different diameter line
changes with the frequency of the energy it carries
is correct for only one size of line
is greater for larger diameter line
B-006-01-05
What commonly available antenna feed line can be buried directly in the ground for some distance without adverse effects?
300 ohm twin-lead
600 ohm open-wire
75 ohm twin-lead
coaxial cable
B-006-01-06
The characteristic impedance of a transmission line is:
the impedance of a section of the line one wavelength long
the dynamic impedance of the line at the operating frequency
the ratio of the power supplied to the line to the power delivered to the termination
equal to the pure resistance which, if connected to the end of the line, will absorb all the power arriving along it
B-006-01-07
A transmission line differs from an ordinary circuit or network in communications or signaling devices in one very important way. That important aspect is:
capacitive reactance
inductive reactance
propagation delay
resistance
B-006-01-08
The characteristic impedance of a parallel wire transmission line does not depend on the:
velocity of energy on the line
radius of the conductors
centre to centre distance between conductors
dielectric
B-006-01-09
Any length of transmission line may be made to appear as an infinitely long line by:
terminating the line in its characteristic impedance
leaving the line open at the end
shorting the line at the end
increasing the standing wave ratio above unity
B-006-01-10
What factors determine the characteristic impedance of a parallel-conductor antenna feed line?
The distance between the centres of the conductors and the radius of the conductors
The distance between the centres of the conductors and the length of the line
The radius of the conductors and the frequency of the signal
The frequency of the signal and the length of the line
B-006-01-11
What factors determine the characteristic impedance of a coaxial antenna feed line?
The ratio of the diameter of the inner conductor to the diameter of the braid
The diameter of the braid and the length of the line
The diameter of the braid and the frequency of the signal
The frequency of the signal and the length of the line