What is one way that RF energy can affect human body tissue?

1. A It heats body tissue
2. B It causes radiation poisoning
3. C It causes the blood count to reach a dangerously low level
4. D It cools body tissue

Which of the following is used to determine RF exposure from a transmitted signal?

1. A Its duty cycle
2. B Its frequency
3. C Its power density
4. D All these choices are correct

How can you determine that your station complies with FCC RF exposure regulations?

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

What does "time averaging" mean when evaluating RF radiation exposure?

1. A The average amount of power developed by the transmitter over a specific 24-hour period
2. B The average time it takes RF radiation to have any long-term effect on the body
3. C The total time of the exposure
4. D The total RF exposure averaged over a certain period

What must you do if an evaluation of your station shows that the RF energy radiated by your station exceeds permissible limits for possible human absorption?

1. A Take action to prevent human exposure to the excessive RF fields
2. B File an Environmental Impact Statement (EIS-97) with the FCC
3. C Secure written permission from your neighbors to operate above the controlled MPE limits
4. D All these choices are correct

What must you do if your station fails to meet the FCC RF exposure exemption criteria?

1. A Perform an RF exposure evaluation in accordance with FCC OET Bulletin 65
2. B Contact the FCC for permission to transmit
3. C Perform an RF exposure evaluation in accordance with World Meteorological Organization guidelines
4. D Use an FCC-approved band-pass filter

What is the effect of modulation duty cycle on RF exposure?

1. A A lower duty cycle permits greater power levels to be transmitted
2. B A higher duty cycle permits greater power levels to be transmitted
3. C Low duty cycle transmitters are exempt from RF exposure evaluation requirements
4. D High duty cycle transmitters are exempt from RF exposure requirements

Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations?

1. A Post a copy of FCC Part 97.13 in the station
2. B Notify neighbors within a 100-foot radius of the antenna of the existence of the station and power levels
3. C Perform a routine RF exposure evaluation and prevent access to any identified high exposure areas
4. D All these choices are correct

What type of instrument can be used to accurately measure an RF field strength?

1. A A receiver with digital signal processing (DSP) noise reduction
2. B A calibrated field strength meter with a calibrated antenna
3. C An SWR meter with a peak-reading function
4. D An oscilloscope with a high-stability crystal marker generator

What should be done if evaluation shows that a neighbor might experience more than the allowable limit of RF exposure from the main lobe of a directional antenna?

1. A Change to a non-polarized antenna with higher gain
2. B Use an antenna with a higher front-to-back ratio
3. C Take precautions to ensure that the antenna cannot be pointed in their direction when they are present
4. D All these choices are correct

What precaution should be taken if you install an indoor transmitting antenna?

1. A Locate the antenna close to your operating position to minimize feed-line radiation
2. B Position the antenna along the edge of a wall to reduce parasitic radiation
3. C Make sure that MPE limits are not exceeded in occupied areas
4. D Make sure the antenna is properly shielded

What stations are subject to the FCC rules on RF exposure?

1. A All commercial stations; amateur radio stations are exempt
2. B Only stations with antennas lower than one wavelength above the ground
3. C Only stations transmitting more than 500 watts PEP
4. D All stations with a time-averaged transmission of more than one milliwatt