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
3.11 Transmitter, carrier, keying, AM
Practice
B-003-11-01
What does chirp mean?
A high-pitched tone which is received along with a CW signal
A small change in a transmitter's frequency each time it is keyed
A slow change in transmitter frequency as the circuit warms up
An overload in a receiver's audio circuit whenever CW is received
B-003-11-02
What can be done to keep a CW transmitter from chirping?
Add a key-click filter
Keep the power supply voltages very steady
Keep the power supply current very steady
missing
B-003-11-03
What circuit has a variable-frequency oscillator connected to a driver and a power amplifier?
A crystal-controlled transmitter
A VFO-controlled transmitter
A single-sideband transmitter
A packet-radio transmitter
B-003-11-04
What type of modulation system changes the amplitude of an RF wave for the purpose of conveying information?
Phase modulation
Amplitude modulation
Amplitude-rectification modulation
Frequency modulation
B-003-11-05
In what emission type does the instantaneous amplitude (envelope) of the RF signal vary in accordance with the modulating audio?
Frequency modulation
Pulse modulation
Amplitude modulation
Frequency shift keying
B-003-11-06
Morse code is usually transmitted by radio as:
a series of key-clicks
a continuous carrier
an interrupted carrier
a voice-modulated carrier
B-003-11-07
A mismatched antenna or feedline may present an incorrect load to the transmitter. The result may be:
loss of modulation in the transmitted signal
the driver stage will not deliver power to the final
excessive heat produced in the final transmitter stage
the output tank circuit breaks down
B-003-11-08
One result of a slight mismatch between the power amplifier of a transmitter and the antenna would be:
smaller DC current drain
lower modulation percentage
reduced antenna radiation
radiated key-clicks
B-003-11-09
An RF oscillator should be electrically and mechanically stable. This is to ensure that the oscillator does not:
become over modulated
generate key-clicks
drift in frequency
cause undue distortion
B-003-11-10
The input power to the final stage of your transmitter is 200 watts and the output is 125 watts. What has happened to the remaining power?
It has been dissipated as heat loss
It has been used to provide greater efficiency
It has been used to provide negative feedback
It has been used to provide positive feedback
B-003-11-11
The difference between DC input power and RF output power of a transmitter RF amplifier:
is lost in the feed line
appears as heat dissipation
is due to oscillating
radiates from the antenna