T0A01
What is a commonly accepted value for the lowest voltage that can cause a dangerous electric shock?
A. 12 volts
B. 30 volts
C. 120 volts
D. 300 volts
T0A02
What is the lowest amount of electrical current flowing through the human body that is likely to cause death?
A. 10 microamperes
B. 100 milliamperes
C. 10 amperes
D. 100 amperes
T0A03
What is connected to the green wire in a three-wire electrical plug?
A. Neutral
B. Hot
C. Ground
D. The white wire
T0A04
What is the purpose of a fuse in an electrical circuit?
A. To make sure enough power reaches the circuit
B. To interrupt power in case of overload
C. To prevent television interference
D. To prevent shocks
T0A05
What might happen if you install a 20-ampere fuse in your transceiver in the place of a 5-ampere fuse?
A. The larger fuse would better protect your transceiver from
using too much current
B. The transceiver will run cooler
C. Excessive current could cause a fire
D. The transceiver would not be able to produce as much RF output
T0A06
What is a good way to guard against electrical shock at your station?
A. Use 3-wire cords and plugs for all AC powered equipment
B. Connect all AC powered station equipment to a common ground
C. Use a ground-fault interrupter at each electrical outlet
D. All of these answers are correct
T0A07
What is the most important thing to consider when installing an emergency disconnect switch at your station?
A. It must always be as near to the operator as possible
B. It must always be as far away from the operator as possible
C. Everyone should know where it is and how to use it
D. It should be installed in a metal box to prevent tampering
T0A08
What precautions should be taken when a lightning storm is expected?
A. Disconnect the antenna cables from your station and move them
away from your radio equipment
B. Unplug all power cords from AC outlets
C. Stop using your radio equipment and move to another room until
the storm passes
D. All of these answers are correct
T0A09
What is one way to recharge a 12-volt battery if the commercial power is out?
A. You cannot recharge a battery unless the power is back on
B. Add water to the battery
C. Connect the battery to a car's battery and run the engine
D. Take your battery to the utility company for a recharge
T0A10
What kind of hazard is presented by a conventional 12-volt storage battery?
A. It contains dangerous acid that can spill and cause injury
B. Short circuits can damage wiring and possibly cause a fire
C. Explosive gas can collect if not properly vented
D. All of these answers are correct
T0A11
What can happen if a storage battery is charged or discharged too quickly?
A. The battery could overheat and give off dangerous gas or
explode
B. The terminal voltage will oscillate rapidly
C. The warranty will be voided
D. The voltage will be reversed
T0A12
What is the most important reason to have a lightning protection system for your amateur radio station?
A. Lower insurance rates
B. Improved reception
C. Fire prevention
D. Noise reduction
T0A13
What kind of hazard might exist in a power supply when it is turned off and disconnected?
A. Static electricity could damage the grounding system
B. Circulating currents inside the transformer might cause damage
C. The fuse might blow if you remove the cover
D. You might receive an electric shock from stored charge in large
capacitors
T0B01
Why should you wear a hard hat and safety glasses if you are on the
ground helping someone work on an antenna tower?
A. It is required by FCC rules
B. To keep RF energy away from your head during antenna testing
C. To protect your head and eyes in case something accidentally falls from the tower
D. It is required by the electrical code
T0B02
What is a good precaution to observe before climbing an antenna tower?
A. Turn on all radio transmitters
B. Remove all tower grounding connections
C. Put on your safety belt and safety glasses
D. Inform the FAA and the FCC that you are working on a tower
T0B03
What should you do before you climb a tower?
A. Arrange for a helper or observer
B. Inspect the tower for damage or loose hardware
C. Make sure there are no electrical storms nearby
D. All of these answers are correct
T0B04
What is an important consideration when putting up an antenna?
A. Carefully tune it for a low SWR
B. Make sure people cannot accidentally come into contact with it
C. Make sure you discard all packing material in a safe place
D. Make sure birds can see it so they don’t fly into it
T0B05 [97.15(A)]
What must be considered when erecting an antenna near an airport?
A. The maximum allowed height with regard to nearby airports
B. The possibility of interference to aircraft radios
C. The radiation angle of the signals it produces
D. The polarization of signal to be radiated
T0B06
What is the most important safety precaution to observe when putting up an antenna tower?
A. Install steps on the tower for safe climbing
B. Insulate the base of the tower to avoid lightning strikes
C. Ground the base of the tower to prevent lightning strikes
D. Look for and stay clear of any overhead electrical wires
T0B07
How should the guy wires for an antenna tower be installed?
A. So each guy wire anchor point has an even number of wires
B. So that no guy wire is more than 25 feet long
C. Each guy wire must be pulled as tight as possible
D. In accordance with the tower manufacturer's instructions
T0B08
What is a safe distance from a power line to allow when installing an antenna?
A. Half the width of your property unless the wires are at least
23 feet high
B. 12.5 feet in most metropolitan areas
C. 36 meters plus 1/2 wavelength at the operating frequency
D. So that if the antenna falls unexpectedly, no part of it can
come closer than 10 feet to the power wires
T0B09
What is the most important safety rule to remember when using a crank-up tower?
A. This type of tower must never be painted
B. Crank up towers must be raised and lowered frequently to keep
them properly lubricated
C. Winch cables must be specially rated for use on this type of
tower
D. A crank-up tower should never be climbed unless it is in the
fully lowered position
T0B10
Why is stainless steel hardware used on many antennas instead of other metals?
A. Stainless steel is a better electrical conductor
B. Stainless steel weighs less than other metals
C. Stainless steel parts are much less likely to corrode
D. Stainless steel costs less than other metals
T0B11
What is considered to be an adequate ground for a tower?
A. A single 4 foot ground rod, driven into the earth no more than
12 inches from the base
B. A screen of 120 radial wires
C. Separate 8 foot long ground rods for each tower leg, bonded to
the tower and each other
D. A connection between the tower base and a cold water pipe
T0C01
What type of radiation are VHF and UHF radio signals?
A. Gamma radiation
B. Ionizing radiation
C. Alpha radiation
D. Non-ionizing radiation
T0C02
When can radio waves cause injury to the human body?
A. Only when the frequency is below 30 MHz
B. Only if the combination of signal strength and frequency cause
excessive power to be absorbed
C. Only when the frequency is greater than 30 MHz
D. Only when transmitter power exceeds 50 watts
T0C03 [97.13(C)(1)]
What is the maximum power level that an amateur radio station may use
at frequencies above 30 MHz before an RF exposure evaluation is
required?
A. 1500 watts PEP transmitter output
B. 1 watt forward power
C. 50 watts PEP at the antenna
D. 50 watts PEP reflected power
T0C04
What factors affect the RF exposure of people near an amateur transmitter?
A. Frequency and power level of the RF field
B. Distance from the antenna to a person
C. Radiation pattern of the antenna
D. All of these answers are correct
T0C05
Why must the frequency of an RF source be considered when evaluating RF radiation exposure?
A. Lower frequency RF fields have more energy than higher
frequency fields
B. Lower frequency RF fields do not penetrate the human body
C. Higher frequency RF fields are transient in nature and do not
affect the human body
D. The human body absorbs more RF energy at some frequencies than
others
T0C06 [97.13(c)(1)]
How can you determine that your station complies with FCC RF exposure regulations?
A. By calculation based on FCC OET Bulletin 65
B. By calculation based on computer modeling
C. By measurement of field strength using calibrated equipment
D. All of these choices are correct
T0C07
What could happen if a person accidentally touched your antenna while you were transmitting?
A. Touching the antenna could cause television interference
B. They might receive a painful RF burn injury
C. They would be able to hear what you are saying
D. Nothing
T0C08
What action might amateur operators take to prevent exposure
to RF radiation in excess of FCC supplied limits?
A. Alter antenna patterns
B. Relocate antennas
C. Change station parameters such as frequency or power
D. All of these answers are correct
T0C09
How can you make sure your station stays in compliance with RF safety regulations?
A. Compliance is not necessary
B. By re-evaluating the station whenever an item of equipment is changed
C. By making sure your antennas have a low SWR
D. By installing a low pass filter
T0C10
Which of the following units of measurement is used to measure RF radiation exposure?
A. Milliwatts per square centimeter
B. Megohms per square meter
C. Microfarads per foot
D. Megahertz per second
T0C11
Why is duty cycle one of the factors used to determine safe RF radiation exposure levels?
A. It takes into account the amount of time the transmitter is operating
B. It takes into account the transmitter power supply rating
C. It takes into account the antenna feed line loss
D. It takes into account the thermal effects of the final amplifier