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
5.5 Series and Parallel Resistors
Practice
B-005-05-01
In a parallel circuit with a voltage source and several branch resistors, how is the total current related to the current in the branch resistors?
It equals the sum of the branch current through each resistor
It equals the average of the branch current through each resistor
It decreases as more parallel resistors are added to the circuit
It is the sum of each resistor's voltage drop multiplied by the total number ofresistors
B-005-05-02
A 6 volt battery is connected across three resistances of connected in parallel.
The current through the 10 ohms, 15 ohms and 20 ohms separate resistances, when added together, equals the total current drawn from the battery
The current flowing through the 10 ohm resistance is less than that flowing through the 20 ohm resistance
The voltage drop across each resistance added together equals 6 volts
The voltage drop across the 20 ohm resistance is greater than the voltage across the 10 ohm resistance
B-005-05-03
Total resistance in a parallel circuit:
is always less than the smallest resistance
depends upon the IR drop across each branch
could be equal to the resistance of one branch
depends upon the applied voltage
B-005-05-04
Two resistors are connected in paralle and are connected across a 40 volt battery. If each resistor is 1000 ohms, the total current is:
80 milliamperes
40 milliamperes
80 amperes
40 amperes
B-005-05-05
The total resistance of resistors connected in series is:
greater than the resistance of any one resistor
less than the resistance of any one resistor
equal to the highest resistance present
equal to the lowest resistance present
B-005-05-06
Five 10 ohm resistors connected in series equals:
50 ohms
5 ohms
10 ohms
1 ohm
B-005-05-07
Which series combination of resistors would replace a single 120 ohm resistor?
six 22 ohm
two 62 ohm
five 100 ohm
five 24 ohm
B-005-05-08
If ten resistors of equal value were wired in parallel, the total resistance would be:
10 / R
R / 10
10 x R
10 + R
B-005-05-09
The total resistance of four 68 ohm resistors wired in parallel is:
12 ohms
34 ohms
272 ohms
17 ohms
B-005-05-10
Two resistors are in parallel. Resistor A carries twice the current of resistor B, which means that:
the voltage across B is twice that across A
the voltage across A is twice that across B
A has half the resistance of B
B has half the resistance of A
B-005-05-11
The total current in a parallel circuit is equal to the:
source voltage divided by the value of one of the resistive elements
sum of the currents through all the parallel branches
source voltage divided by the sum of the resistive elements
current in any one of the parallel branches