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Gen - G0A - RF safety
Terms in this set (12)
What is one way that RF energy can affect human body tissue?
It heats body tissue.
Which of the following properties is important in estimating whether an RF signal exceeds the maximum permissible exposure (MPE)?
All: Its duty cycles; its frequency; & its power density.
How can you determine that your station complies with FCC RF exposure regulations?
All: By calculation based on FCC OET Bulletin 65; by calculation based on computer modeling; & by measurement of field strength using calibrated equipment.
What does "time averaging" mean in reference to RF radiation exposure?
The total RF exposure averaged over a certain time.
What must you do if an evaluation of your station shows RF energy radiated from your station exceeds permissible limits?
Take action to prevent human exposure to the excessive RF fields.
What effect does transmitter duty cycle have when evaluating RF exposure?
A lower transmitter duty cycle permits greater short-term exposure levels.
Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations when transmitter power exceeds levels specified in part 97.13?
Perform a routine RF exposure evaluation.
What type of instrument can be used to accurately measure an RF field?
A calibrated field strength meter with a calibrated antenna
What's one thing that can be done if evauation shows a neighbor might receive more than the allowable RF exposure from a directional antenna's main lobe?
Make sure the antenna does not point in his direction.
What precaution should you take if you install an indoor transmitting antenna?
Make sure that MPE limits are not exceeded in occupied areas
What precaution should you take whenever you make adjustments or repairs to an antenna?
Turn off the transmitter and disconnect the feed line.
What precaution should be taken when installing a ground-mounted antenna?
It should be installed so no one can be exposed to RF radiation in excess of MPE limits.
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