Ham Technician License Practice Quiz

• Percentage: 0%; Correct: 0; Total: 0 of 35

T0A12: What kind of hazard might exist in a power supply when it is turned off and disconnected?

Static electricity could damage the grounding system
Circulating currents inside the transformer might cause damage
The fuse might blow if you remove the cover
You might receive an electric shock from stored charge in large capacitors

T0B05: What is the purpose of a gin pole?

To temporarily replace guy wires
To be used in place of a safety harness
To lift tower sections or antennas
To provide a temporary ground

T0C04: What factors affect the RF exposure of people near an amateur station antenna?

Frequency and power level of the RF field
Distance from the antenna to a person
Radiation pattern of the antenna
All of these choices are correct

T1A02: What agency regulates and enforces the rules for the Amateur Radio Service in the United States?

Homeland Security

T1B09: Why should you not set your transmit frequency to be exactly at the edge of an amateur band or sub-band?

To allow for calibration error in the transmitter frequency display
So that modulation sidebands do not extend beyond the band edge
To allow for transmitter frequency drift
All of these choices are correct

T1C01: Which type of call sign has a single letter in both the prefix and suffix?

Special event

T1D04: What is the only time an amateur station is authorized to transmit music?

When incidental to an authorized retransmission of manned spacecraft communications
When the music produces no spurious emissions
When the purpose is to interfere with an illegal transmission
When the music is transmitted above 1280 MHz

T1E08: What type of control is being used for a repeater when the control operator is not present at a control point?

Local control
Remote control
Automatic control

T1F07: Which of the following restrictions apply when appending a self-assigned call sign indicator?

It must be more than three letters and less than five letters
It must be less than five letters
It must start with the letters AA through AL, K, N, or W and be not less than two characters or more than five characters in length
It must not conflict with any other indicator specified by the FCC rules or with any call sign prefix assigned to another country

T2A01: What is the most common repeater frequency offset in the 2 meter band?

plus 500 kHz
plus or minus 600 kHz
minus 500 kHz
Only plus 600 kHz

T2B06: What happens when the deviation of an FM transmitter is increased?

Its signal occupies more bandwidth
Its output power increases
Its output power and bandwidth increases
Asymmetric modulation occurs

T2C07: What should you do to minimize disruptions to an emergency traffic net once you have checked in?

Whenever the net frequency is quiet, announce your call sign and location
Move 5 kHz away from the net's frequency and use high power to ask other hams to keep clear of the net frequency
Do not transmit on the net frequency until asked to do so by the net control station
Wait until the net frequency is quiet, then ask for any emergency traffic for your area

T3A01: What should you do if another operator reports that your station's 2 meter signals were strong just a moment ago, but now they are weak or distorted?

Change the batteries in your radio to a different type
Turn on the CTCSS tone
Ask the other operator to adjust his squelch control
Try moving a few feet, as random reflections may be causing multi-path distortion

T3B04: How fast does a radio wave travel through free space?

At the speed of light
At the speed of sound
Its speed is inversely proportional to its wavelength
Its speed increases as the frequency increases

T3C02: Which of the following might be happening when VHF signals are being received from long distances?

Signals are being reflected from outer space
Signals are arriving by sub-surface ducting
Signals are being reflected by lightning storms in your area
Signals are being refracted from a sporadic E layer

T4A10: What is the source of a high-pitched whine that varies with engine speed in a mobile transceiver's receive audio?

The ignition system
The alternator
The electric fuel pump
Anti-lock braking system controllers

T4B03: What is the purpose of the squelch control on a transceiver?

To set the highest level of volume desired
To set the transmitter power level
To adjust the automatic gain control
To mute receiver output noise when no signal is being received

T5A10: Which term describes the rate at which electrical energy is used?


T5B06: If an ammeter calibrated in amperes is used to measure a 3000-milliampere current, what reading would it show?

0.003 amperes
0.3 amperes
3 amperes
3,000,000 amperes

T5C07: What is a usual name for electromagnetic waves that travel through space?

Gravity waves
Sound waves
Radio waves
Pressure waves

T5D09: What is the current flowing through a 24-ohm resistor connected across 240 volts?

24,000 amperes
0.1 amperes
10 amperes
216 amperes

T6A02: What type of component is often used as an adjustable volume control?

Fixed resistor
Power resistor

T6B08: What does the abbreviation "FET" stand for?

Field Effect Transistor
Fast Electron Transistor
Free Electron Transition
Field Emission Thickness

T6C11: What is component 4 in figure T3?

Dummy load

T6D10: What is the function of component 2 in Figure T1?

Give off light when current flows through it
Supply electrical energy
Control the flow of current
Convert electrical energy into radio waves

T7A03: What is the function of a mixer in a superheterodyne receiver?

To reject signals outside of the desired passband
To combine signals from several stations together
To shift the incoming signal to an intermediate frequency
To connect the receiver with an auxiliary device, such as a TNC

T7B06: What should you do first if someone tells you that your station's transmissions are interfering with their radio or TV reception?

Make sure that your station is functioning properly and that it does not cause interference to your own television
Immediately turn off your transmitter and contact the nearest FCC office for assistance
Tell them that your license gives you the right to transmit and nothing can be done to reduce the interference
Continue operating normally because your equipment cannot possibly cause any interference

T7C06: What does an SWR reading of 4:1 mean?

An antenna loss of 4 dB
A good impedance match
An antenna gain of 4
An impedance mismatch

T7D01: Which instrument would you use to measure electric potential or electromotive force?

An ammeter
A voltmeter
A wavemeter
An ohmmeter

T8A04: Which type of modulation is most commonly used for VHF and UHF voice repeaters?


T8B11: What is a commonly used method of sending signals to and from a digital satellite?

FM Packet

T8C07: What is the maximum power allowed when transmitting telecommand signals to radio controlled models?

500 milliwatts
1 watt
25 watts
1500 watts

T8D11: What is a "parity" bit?

A control code required for automatic position reporting
A timing bit used to ensure equal sharing of a frequency
An extra code element used to detect errors in received data
A "triple width" bit used to signal the end of a character

T9A10: In which direction is the radiation strongest from a half-wave dipole antenna in free space?

Equally in all directions
Off the ends of the antenna
Broadside to the antenna
In the direction of the feedline

T9B08: Why should coax connectors exposed to the weather be sealed against water intrusion?

To prevent an increase in feedline loss
To prevent interference to telephones
To keep the jacket from becoming loose
All of these choices are correct