1. Roanoke Valley Amateur Radio Club
Welcome
Roanoke Valley Amateur Radio Club

2. Amateur Radio License Training Course
Technician
Sponsored by the
Roanoke Valley Amateur Radio Club

3. Class Outline
T1 - 6 questions - FCC Rules, descriptions, and definitions for the Amateur Radio Service, operator and station license responsibilities.
T2 - 3 questions - Operating Procedures.
T3 - 3 questions - Radio wave characteristics: properties of radio waves; propagation modes.
T4 - 2 exam questions - Amateur radio practices and station set up.
T5 - 4 exam questions - Electrical principles: math for electronics; electronic principles; Ohm’s Law.
T6 - 4 exam questions - Electrical components; circuit diagrams; component functions.
T7 - 4 exam questions - Station equipment: common transmitter and receiver problems; antenna measurements; troubleshooting; basic repair and testing.
T8 - 4 exam questions - Modulation modes: amateur satellite operation; operating activities; non-voice and digital communications.
T9 - 2 exam questions - Antennas and feed lines.
T0 - 3 exam questions - Electrical safety: AC and DC power circuits; antenna installation; RF hazards.

4. Subelement T0
T0 - 3 exam questions - Electrical safety: AC and DC power circuits; antenna installation; RF hazards.

5. Subelement T0
Shorting the terminals of a 12-volt storage battery is a safety hazard and can cause burns, fire, or an explosion. (T0A01)
A lead-acid storage battery could overheat and give off flammable gas or explode if charged or discharged too quickly. (T0A10)
All external ground rods or earth connections should be bonded together with heavy wire or conductive strap. (T0A09)

6. Subelement T0
Electrical current flowing through the body may cause a health hazards such as injury by heating tissue, disrupting the electrical functions of cells, or involuntary muscle contractions. (T0A02)
Exposure limits vary because the human body absorbs more RF energy at some frequencies than at others. (T0C05)

7. Subelement T0
50 watts PEP at the antenna is the maximum power level that an amateur radio station may use at VHF frequencies before an RF exposure evaluation is required. (T0C03)
50 MHz has the lowest value for Maximum Permissible Exposure limit. (T0C02)

8. Subelement T0
Frequency and power level of the RF field, distance from the antenna to a person, and radiation pattern of the antenna affect the RF exposure of people near an amateur station antenna. (T0C04)
By re-evaluating the station whenever an item of equipment is changed you can make sure your station stays in compliance with RF safety regulations. (T0C09)

9. Subelement T0
Acceptable methods to determine that your station complies with FCC RF exposure regulations are by calculation based on FCC OET Bulletin 65, calculation based on computer modeling, and measurement of field strength using calibrated equipment. (T0C06)

10. Subelement T0
Duty cycle is one of the factors used to determine safe RF radiation exposure levels because it affects the average exposure of people to radiation. (T0C10)
The percentage of time that a transmitter is transmitting is the definition of duty cycle during the averaging time for RF exposure. (T0C11)

11. Subelement T0
If the averaging time for exposure is 6 minutes, 2 times as much power density is permitted if the signal is present for 3 minutes and absent for 3 minutes rather than being present for the entire 6 minutes. (T0C13)

12. Subelement T0
Relocate antennas to prevent exposure to RF radiation in excess of FCC-supplied limits. (T0C08)
VHF and UHF radio signals are non-ionizing radiation. (T0C01)
RF radiation differs from ionizing radiation (radioactivity) because RF radiation does not have sufficient energy to cause genetic damage. (T0C12)

13. Subelement T0
A good way to guard against electrical shock at your station is to use three-wire cords and plugs for all AC powered equipment, connect all AC powered station equipment to a common safety ground, and use a circuit protected by a ground-fault interrupter. (T0A06)

14. Subelement T0
In the United States, equipment ground is connected to the green wire in a three-wire electrical AC plug. (T0A03)
The purpose of a fuse in an electrical circuit is to interrupt power in case of overload. (T0A04)

15. Hot (Live)
Neutral (White)
Ground (Green)
AC Line Connections

16. Subelement T0
It is unwise to install a 20-ampere fuse in the place of a 5-ampere fuse because excessive current could cause a fire. (T0A05)
A fuse or circuit breaker in series with the AC hot conductor should always be included in home-built equipment that is powered from 120V AC power circuits. (T0A08)

17. Subelement T0
You might receive an electric shock from the charged stored in large capacitors in a power supply when it is turned off and disconnected. (T0A11)
If a person accidentally touched your antenna while you were transmitting they might receive a painful RF burn. (T0C07)

18. Subelement T0
Never climb a tower without a helper or observer. (T0B03)
Look for and stay clear of any overhead electrical wires is an important safety precaution to observe when putting up an antenna tower. (T0B04)

19. Subelement T0
The minimum safe distance from a power line to allow when installing an antenna is no part of it can come closer than 10 feet to the power wires. (T0B06)

20. Subelement T0
A good precaution to observe before climbing an antenna tower is to put on a carefully inspected climbing harness (fall arrester) and safety glasses. (T0B02)
Members of a tower work team should wear a hard hat and safety glasses at all times when any work is being done on the tower. (T0B01)

21. Subelement T0
A safety rule to remember when using a crank-up tower is it must never be climbed unless retracted or mechanical safety locking devices have been installed. (T0B07)
To lift tower sections or antennas is the purpose of a gin pole. (T0B05)
The purpose of a safety wire through a turnbuckle used to tension guy lines is to prevent loosening of the guy line from vibration. (T0B13)

22. Subelement T0
Local electrical codes establish grounding requirements for an amateur radio tower or antenna. (T0B11)
Separate eight-foot long ground rods for each tower leg, bonded to the tower and each other is considered to be a proper grounding method for a tower. (T0B08)

23. Subelement T0

24. Subelement T0
Ensure that connections are short and direct when installing ground wires on a tower for lightning protection. (T0B12)
When grounding conductors are used for lightning protection sharp bends must be avoided. (T0B10)

25. Subelement T0
Mount all of the protectors on a metal plate that is in turn connected to an external ground when installing devices for lightning protection for coaxial cable feed line. (T0A07)
You should avoid attaching an antenna to a utility pole it could contact high- voltage power wires. (T0B09)

26. Which of the following is a safety hazard of a 12-volt storage battery
Which of the following is a safety hazard of a 12-volt storage battery? (T0A01)
A. Touching both terminals with the hands can cause electrical shock
B. Shorting the terminals can cause burns, fire, or an explosion
C. RF emissions from the battery
D. All of these choices are correct

27. Which of the following is a safety hazard of a 12-volt storage battery
Which of the following is a safety hazard of a 12-volt storage battery? (T0A01)
A. Touching both terminals with the hands can cause electrical shock
B. Shorting the terminals can cause burns, fire, or an explosion
C. RF emissions from the battery
D. All of these choices are correct

28. What health hazard is presented by electrical current flowing through the body? (T0A02)
A. By heating tissue
B. It disrupts the electrical functions of cells
C. It causes involuntary muscle contractions
D. All of these choices are correct

29. What health hazard is presented by electrical current flowing through the body? (T0A02)
A. By heating tissue
B. It disrupts the electrical functions of cells
C. It causes involuntary muscle contractions
D. All of these choices are correct

30. In the United States, what is connected to the green wire in a three-wire electrical AC plug? (T0A03)
A. Neutral
B. Hot
C. Equipment ground
D. The white wire

31. In the United States, what is connected to the green wire in a three-wire electrical AC plug? (T0A03)
A. Neutral
B. Hot
C. Equipment ground
D. The white wire

32. What is the purpose of a fuse in an electrical circuit? (T0A04)
A. To prevent power supply ripple from damaging a circuit
B. To interrupt power in case of overload
C. To limit current to prevent shocks
D. All of these choices are correct

33. What is the purpose of a fuse in an electrical circuit? (T0A04)
A. To prevent power supply ripple from damaging a circuit
B. To interrupt power in case of overload
C. To limit current to prevent shocks
D. All of these choices are correct

34. Why is it unwise to install a 20-ampere fuse in the place of a 5-ampere fuse? (T0A05)
A. The larger fuse would be likely to blow because it is rated for higher current
B. The power supply ripple would greatly increase
C. Excessive current could cause a fire
D. All of these choices are correct

35. Why is it unwise to install a 20-ampere fuse in the place of a 5-ampere fuse? (T0A05)
A. The larger fuse would be likely to blow because it is rated for higher current
B. The power supply ripple would greatly increase
C. Excessive current could cause a fire
D. All of these choices are correct

36. What is a good way to guard against electrical shock at your station
What is a good way to guard against electrical shock at your station? (T0A06)
A. Use three-wire cords and plugs for all AC powered equipment
B. Connect all AC powered station equipment to a common safety ground
C. Use a circuit protected by a ground-fault interrupter
D. All of these choices are correct

37. What is a good way to guard against electrical shock at your station
What is a good way to guard against electrical shock at your station? (T0A06)
A. Use three-wire cords and plugs for all AC powered equipment
B. Connect all AC powered station equipment to a common safety ground
C. Use a circuit protected by a ground-fault interrupter
D. All of these choices are correct

38. Which of these precautions should be taken when installing devices for lightning protection in a coaxial cable feed line? (T0A07)
A. Include a parallel bypass switch for each protector so that it can be switched out of the circuit when running high power
B. Include a series switch in the ground line of each protector to prevent RF overload from inadvertently damaging the protector
C. Keep the ground wires from each protector separate and connected to station ground
D. Mount all of the protectors on a metal plate that is in turn connected to an external ground rod

39. Which of these precautions should be taken when installing devices for lightning protection in a coaxial cable feed line? (T0A07)
A. Include a parallel bypass switch for each protector so that it can be switched out of the circuit when running high power
B. Include a series switch in the ground line of each protector to prevent RF overload from inadvertently damaging the protector
C. Keep the ground wires from each protector separate and connected to station ground
D. Mount all of the protectors on a metal plate that is in turn connected to an external ground rod

40. What safety equipment should always be included in home-built equipment that is powered from 120V AC power circuits? (T0A08)
A. A fuse or circuit breaker in series with the AC hot conductor
B. An AC voltmeter across the incoming power source
C. An inductor in parallel with the AC power source
D. A capacitor in series with the AC power source

41. What safety equipment should always be included in home-built equipment that is powered from 120V AC power circuits? (T0A08)
A. A fuse or circuit breaker in series with the AC hot conductor
B. An AC voltmeter across the incoming power source
C. An inductor in parallel with the AC power source
D. A capacitor in series with the AC power source

42. What should be done to all external ground rods or earth connections
What should be done to all external ground rods or earth connections? (T0A09)
A. Waterproof them with silicone caulk or electrical tape
B. Keep them as far apart as possible
C. Bond them together with heavy wire or conductive strap
D. Tune them for resonance on the lowest frequency of operation

43. What should be done to all external ground rods or earth connections
What should be done to all external ground rods or earth connections? (T0A09)
A. Waterproof them with silicone caulk or electrical tape
B. Keep them as far apart as possible
C. Bond them together with heavy wire or conductive strap
D. Tune them for resonance on the lowest frequency of operation

44. What can happen if a lead-acid storage battery is charged or discharged too quickly? (T0A10)
A. The battery could overheat, give off flammable gas, or explode
B. The voltage can become reversed
C. The memory effect will reduce the capacity of the battery
D. All of these choices are correct

45. What can happen if a lead-acid storage battery is charged or discharged too quickly? (T0A10)
A. The battery could overheat, give off flammable gas, or explode
B. The voltage can become reversed
C. The memory effect will reduce the capacity of the battery
D. All of these choices are correct

46. What kind of hazard might exist in a power supply when it is turned off and disconnected? (T0A11)
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 the charged stored in large capacitors

47. What kind of hazard might exist in a power supply when it is turned off and disconnected? (T0A11)
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 the charged stored in large capacitors

48. When should members of a tower work team wear a hard hat and safety glasses? (T0B01)
A. At all times except when climbing the tower
B. At all times except when belted firmly to the tower
C. At all times when any work is being done on the tower
D. Only when the tower exceeds 30 feet in height

49. When should members of a tower work team wear a hard hat and safety glasses? (T0B01)
A. At all times except when climbing the tower
B. At all times except when belted firmly to the tower
C. At all times when any work is being done on the tower
D. Only when the tower exceeds 30 feet in height

50. What is a good precaution to observe before climbing an antenna tower
What is a good precaution to observe before climbing an antenna tower? (T0B02)
A. Make sure that you wear a grounded wrist strap
B. Remove all tower grounding connections
C. Put on a carefully inspected climbing harness (fall arrester) and safety glasses
D. All of these choices are correct

51. What is a good precaution to observe before climbing an antenna tower
What is a good precaution to observe before climbing an antenna tower? (T0B02)
A. Make sure that you wear a grounded wrist strap
B. Remove all tower grounding connections
C. Put on a carefully inspected climbing harness (fall arrester) and safety glasses
D. All of these choices are correct

52. Under what circumstances is it safe to climb a tower without a helper or observer? (T0B03)
A. When no electrical work is being performed
B. When no mechanical work is being performed
C. When the work being done is not more than 20 feet above the ground
D. Never

53. Under what circumstances is it safe to climb a tower without a helper or observer? (T0B03)
A. When no electrical work is being performed
B. When no mechanical work is being performed
C. When the work being done is not more than 20 feet above the ground
D. Never

54. Which of the following is an important safety precaution to observe when putting up an antenna tower? (T0B04)
A. Wear a ground strap connected to your wrist at all times
B. Insulate the base of the tower to avoid lightning strikes
C. Look for and stay clear of any overhead electrical wires
D. All of these choices are correct

55. Which of the following is an important safety precaution to observe when putting up an antenna tower? (T0B04)
A. Wear a ground strap connected to your wrist at all times
B. Insulate the base of the tower to avoid lightning strikes
C. Look for and stay clear of any overhead electrical wires
D. All of these choices are correct

56. What is the purpose of a gin pole? (T0B05)
A. To temporarily replace guy wires
B. To be used in place of a safety harness
C. To lift tower sections or antennas
D. To provide a temporary ground

57. What is the purpose of a gin pole? (T0B05)
A. To temporarily replace guy wires
B. To be used in place of a safety harness
C. To lift tower sections or antennas
D. To provide a temporary ground

58. What is the minimum safe distance from a power line to allow when installing an antenna? (T0B06)
A. Half the width of your property
B. The height of the power line above ground
C. 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

59. What is the minimum safe distance from a power line to allow when installing an antenna? (T0B06)
A. Half the width of your property
B. The height of the power line above ground
C. 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

60. Which of the following is an important safety rule to remember when using a crank-up tower? (T0B07)
A. This type of tower must never be painted
B. This type of tower must never be grounded
C. This type of tower must never be climbed unless retracted or mechanical safety locking devices have been installed
D. All of these choices are correct

61. Which of the following is an important safety rule to remember when using a crank-up tower? (T0B07)
A. This type of tower must never be painted
B. This type of tower must never be grounded
C. This type of tower must never be climbed unless retracted or mechanical safety locking devices have been installed
D. All of these choices are correct

62. What is considered to be a proper grounding method for a tower? (T0B08)
A. A single four-foot ground rod, driven into the ground no more than 12 inches from the base
B. A ferrite-core RF choke connected between the tower and ground
C. Separate eight-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

63. What is considered to be a proper grounding method for a tower? (T0B08)
A. A single four-foot ground rod, driven into the ground no more than 12 inches from the base
B. A ferrite-core RF choke connected between the tower and ground
C. Separate eight-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

64. Why should you avoid attaching an antenna to a utility pole? (T0B09)
A. The antenna will not work properly because of induced voltages
B. The utility company will charge you an extra monthly fee
C. The antenna could contact high- voltage power wires
D. All of these choices are correct

65. Why should you avoid attaching an antenna to a utility pole? (T0B09)
A. The antenna will not work properly because of induced voltages
B. The utility company will charge you an extra monthly fee
C. The antenna could contact high- voltage power wires
D. All of these choices are correct

66. Which of the following is true concerning grounding conductors used for lightning protection? (T0B10)
A. Only non-insulated wire must be used
B. Wires must be carefully routed with precise right-angle bends
C. Sharp bends must be avoided
D. Common grounds must be avoided

67. Which of the following is true concerning grounding conductors used for lightning protection? (T0B10)
A. Only non-insulated wire must be used
B. Wires must be carefully routed with precise right-angle bends
C. Sharp bends must be avoided
D. Common grounds must be avoided

68. Which of the following establishes grounding requirements for an amateur radio tower or antenna? (T0B11)
A. FCC Part 97 Rules
B. Local electrical codes
C. FAA tower lighting regulations
D. UL recommended practices

69. Which of the following establishes grounding requirements for an amateur radio tower or antenna? (T0B11)
A. FCC Part 97 Rules
B. Local electrical codes
C. FAA tower lighting regulations
D. UL recommended practices

70. Which of the following is good practice when installing ground wires on a tower for lightning protection? (T0B12)
A. Put a loop in the ground connection to prevent water damage to the ground system
B. Make sure that all bends in the ground wires are clean, right angle bends
C. Ensure that connections are short and direct
D. All of these choices are correct

71. Which of the following is good practice when installing ground wires on a tower for lightning protection? (T0B12)
A. Put a loop in the ground connection to prevent water damage to the ground system
B. Make sure that all bends in the ground wires are clean, right angle bends
C. Ensure that connections are short and direct
D. All of these choices are correct

72. What is the purpose of a safety wire through a turnbuckle used to tension guy lines? (T0B13)
A. Secure the guy if the turnbuckle breaks
B. Prevent loosening of the guy line from vibration
C. Prevent theft or vandalism
D. Deter unauthorized climbing of the tower

73. What is the purpose of a safety wire through a turnbuckle used to tension guy lines? (T0B13)
A. Secure the guy if the turnbuckle breaks
B. Prevent loosening of the guy line from vibration
C. Prevent theft or vandalism
D. Deter unauthorized climbing of the tower

74. What type of radiation are VHF and UHF radio signals? (T0C01)
A. Gamma radiation
B. Ionizing radiation
C. Alpha radiation
D. Non-ionizing radiation

75. What type of radiation are VHF and UHF radio signals? (T0C01)
A. Gamma radiation
B. Ionizing radiation
C. Alpha radiation
D. Non-ionizing radiation

76. What type of radiation are VHF and UHF radio signals? (T0C01)
A. Gamma radiation
B. Ionizing radiation
C. Alpha radiation
D. Non-ionizing radiation

77. What type of radiation are VHF and UHF radio signals? (T0C01)
A. Gamma radiation
B. Ionizing radiation
C. Alpha radiation
D. Non-ionizing radiation

78. Which of the following frequencies has the lowest value for Maximum Permissible Exposure limit? (T0C02)
A. 3.5 MHz
B. 50 MHz
C. 440 MHz
D MHz

79. Which of the following frequencies has the lowest value for Maximum Permissible Exposure limit? (T0C02)
A. 3.5 MHz
B. 50 MHz
C. 440 MHz
D MHz

80. What is the maximum power level that an amateur radio station may use at VHF frequencies before an RF exposure evaluation is required? (T0C03)
A watts PEP transmitter output
B. 1 watt forward power
C. 50 watts PEP at the antenna
D. 50 watts PEP reflected power

81. What is the maximum power level that an amateur radio station may use at VHF frequencies before an RF exposure evaluation is required? (T0C03)
A watts PEP transmitter output
B. 1 watt forward power
C. 50 watts PEP at the antenna
D. 50 watts PEP reflected power

82. What factors affect the RF exposure of people near an amateur station antenna? (T0C04)
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 choices are correct

83. What factors affect the RF exposure of people near an amateur station antenna? (T0C04)
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 choices are correct

84. Why do exposure limits vary with frequency? (T0C05)
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
D. The human body absorbs more RF energy at some frequencies than at others

85. Why do exposure limits vary with frequency? (T0C05)
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
D. The human body absorbs more RF energy at some frequencies than at others

86. Which of the following is an acceptable method to determine that your station complies with FCC RF exposure regulations? (T0C06)
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

87. Which of the following is an acceptable method to determine that your station complies with FCC RF exposure regulations? (T0C06)
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

88. What could happen if a person accidentally touched your antenna while you were transmitting? (T0C07)
A. Touching the antenna could cause television interference
B. They might receive a painful RF burn
C. They might develop radiation poisoning
D. All of these choices are correct

89. What could happen if a person accidentally touched your antenna while you were transmitting? (T0C07)
A. Touching the antenna could cause television interference
B. They might receive a painful RF burn
C. They might develop radiation poisoning
D. All of these choices are correct

90. Which of the following actions might amateur operators take to prevent exposure to RF radiation in excess of FCC-supplied limits? (T0C08)
A. Relocate antennas
B. Relocate the transmitter
C. Increase the duty cycle
D. All of these choices are correct

91. Which of the following actions might amateur operators take to prevent exposure to RF radiation in excess of FCC-supplied limits? (T0C08)
A. Relocate antennas
B. Relocate the transmitter
C. Increase the duty cycle
D. All of these choices are correct

92. How can you make sure your station stays in compliance with RF safety regulations? (T0C09)
A. By informing the FCC of any changes made in your station
B. By re-evaluating the station whenever an item of equipment is changed
C. By making sure your antennas have low SWR
D. All of these choices are correct

93. How can you make sure your station stays in compliance with RF safety regulations? (T0C09)
A. By informing the FCC of any changes made in your station
B. By re-evaluating the station whenever an item of equipment is changed
C. By making sure your antennas have low SWR
D. All of these choices are correct

94. Why is duty cycle one of the factors used to determine safe RF radiation exposure levels? (T0C10)
A. It affects the average exposure of people to radiation
B. It affects the peak exposure of people to radiation
C. It takes into account the antenna feed line loss
D. It takes into account the thermal effects of the final amplifier

95. Why is duty cycle one of the factors used to determine safe RF radiation exposure levels? (T0C10)
A. It affects the average exposure of people to radiation
B. It affects the peak exposure of people to radiation
C. It takes into account the antenna feed line loss
D. It takes into account the thermal effects of the final amplifier

96. What is the definition of duty cycle during the averaging time for RF exposure? (T0C11)
A. The difference between the lowest power output and the highest power output of a transmitter
B. The difference between the PEP and average power output of a transmitter
C. The percentage of time that a transmitter is transmitting
D. The percentage of time that a transmitter is not transmitting

97. What is the definition of duty cycle during the averaging time for RF exposure? (T0C11)
A. The difference between the lowest power output and the highest power output of a transmitter
B. The difference between the PEP and average power output of a transmitter
C. The percentage of time that a transmitter is transmitting
D. The percentage of time that a transmitter is not transmitting

98. How does RF radiation differ from ionizing radiation (radioactivity)
How does RF radiation differ from ionizing radiation (radioactivity)? (T0C12)
A. RF radiation does not have sufficient energy to cause genetic damage
B. RF radiation can only be detected with an RF dosimeter
C. RF radiation is limited in range to a few feet
D. RF radiation is perfectly safe

99. How does RF radiation differ from ionizing radiation (radioactivity)
How does RF radiation differ from ionizing radiation (radioactivity)? (T0C12)
A. RF radiation does not have sufficient energy to cause genetic damage
B. RF radiation can only be detected with an RF dosimeter
C. RF radiation is limited in range to a few feet
D. RF radiation is perfectly safe

100. D. There is no adjustment allowed for shorter exposure times
If the averaging time for exposure is 6 minutes, how much power density is permitted if the signal is present for 3 minutes and absent for 3 minutes rather than being present for the entire 6 minutes? (T0C13)
A. 3 times as much
B. 1/2 as much
C. 2 times as much
D. There is no adjustment allowed for shorter exposure times

101. D. There is no adjustment allowed for shorter exposure times
If the averaging time for exposure is 6 minutes, how much power density is permitted if the signal is present for 3 minutes and absent for 3 minutes rather than being present for the entire 6 minutes? (T0C13)
A. 3 times as much
B. 1/2 as much
C. 2 times as much
D. There is no adjustment allowed for shorter exposure times

102. Let's see what you've learned. Practice test time!

103. Practice Test Resources
ARRL
Review by subelement
QRZ
Gives correct answers as you go
eHam
Like taking the real test
AA9PW
Gives the most info—shows where you need to study