General · G0
ELECTRICAL AND RF SAFETY
Safety considerations that scale with a bigger HF station: higher power levels, antenna and tower work, and RF exposure evaluation for a station more capable than a Technician setup.
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25 questions across 2 groups
Group G0A
- G0A01What is one way that RF energy can affect human body tissue?
- G0A02Which of the following is used to determine RF exposure from a transmitted signal?
- G0A03How can you determine that your station complies with FCC RF exposure regulations?
- G0A04What does “time averaging” mean when evaluating RF radiation exposure?
- G0A05What 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?
- G0A06What must you do if your station fails to meet the FCC RF exposure exemption criteria?
- G0A07What is the effect of modulation duty cycle on RF exposure?
- G0A08Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations?
- G0A09What type of instrument can be used to accurately measure an RF field strength?
- G0A10What 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?
- G0A11What precaution should be taken if you install an indoor transmitting antenna?
- G0A12What stations are subject to the FCC rules on RF exposure?
Group G0B
- G0B01Which wire or wires in a four-conductor 240 VAC circuit should be attached to fuses or circuit breakers?
- G0B02According to the National Electrical Code, what is the minimum wire size that may be used safely for wiring with a 20-ampere circuit breaker?
- G0B03Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?
- G0B04Where should the station’s lightning protection ground system be located?
- G0B05Which of the following conditions will cause a ground fault circuit interrupter (GFCI) to disconnect AC power?
- G0B06Which of the following is covered by the National Electrical Code?
- G0B07Which of these choices should be observed when climbing a tower using a safety harness?
- G0B08What should be done before climbing a tower that supports electrically powered devices?
- G0B09Which of the following is true of an emergency generator installation?
- G0B10Which of the following is a danger from lead-tin solder?
- G0B11Which of the following is required for lightning protection ground rods?
- G0B12What is the purpose of a power supply interlock?
- G0B13Where should lightning arrestors be located?