T0C

Question 1

T0C01 (D)
What type of radiation are VHF and UHF radio signals?

1 Gamma radiation
2 Ionizing radiation
3 Alpha radiation
4 Non-ionizing radiation

Answer 1

4 Non-ionizing radiation

Question 2

T0C02 (B)
Which of the following frequencies has the lowest value for Maximum Permissible Exposure limit?

1 3.5 MHz
2 50 MHz
3 440 MHz
4 1296 MHz

Answer 2

2 50 MHz

Question 3

T0C03 (C)
What is the maximum power level that an amateur radio station may use at VHF frequencies before an RF exposure evaluation is required?

1 1500 watts PEP transmitter output
2 1 watt forward power
3 50 watts PEP at the antenna
4 50 watts PEP reflected power

Answer 3

3 50 watts PEP at the antenna

Question 4

T0C04 (D)
What factors affect the RF exposure of people near an amateur station antenna?

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

Answer 4

4 All of these choices are correct

Question 5

T0C05 (D)
Why do exposure limits vary with frequency?

1 Lower frequency RF fields have more energy than
higher frequency fields
2 Lower frequency RF fields do not penetrate the human
body
3 Higher frequency RF fields are transient in nature
4 The human body absorbs more RF energy at some
frequencies than at others

Answer 5

4 The human body absorbs more RF energy at some

frequencies than at others

Question 6

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

1 By calculation based on FCC OET Bulletin 65
2 By calculation based on computer modeling
3 By measurement of field strength using calibrated
equipment
4 All of these choices are correct

Answer 6

4 All of these choices are correct

Question 7

T0C13 (C)
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?

1  3 times as much
2  1/2 as much
3  2 times as much
4  There is no adjustment allowed for shorter exposure 
    times

Answer 7

3 2 times as much