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G0A05 - 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?
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0
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1
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December 15, 2025
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G0A04 - What does “time averaging” mean when evaluating RF radiation exposure?
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0
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1
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December 15, 2025
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G0A03 - How can you determine that your station complies with FCC RF exposure regulations?
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0
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2
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December 15, 2025
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G0A02 - Which of the following is used to determine RF exposure from a transmitted signal?
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0
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1
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December 15, 2025
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G0A01 - What is one way that RF energy can affect human body tissue?
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0
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1
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December 15, 2025
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G9D08 - How does a “screwdriver” mobile antenna adjust its feed point impedance?
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0
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0
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December 15, 2025
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G9D02 - What is the feed point impedance of an end-fed half-wave antenna?
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0
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0
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December 15, 2025
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G9C08 - What is meant by the “main lobe” of a directive antenna?
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0
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0
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December 15, 2025
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G9D12 - What is the common name of a dipole with a single central support?
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0
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0
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December 15, 2025
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G9D06 - Which of the following is an advantage of a log-periodic antenna?
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0
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0
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December 15, 2025
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G9C12 - Which of the following is a characteristic of using a gamma match with a Yagi antenna?
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0
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0
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December 15, 2025
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G9C05 - What is the primary effect of increasing boom length and adding directors to a Yagi antenna?
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0
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0
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December 15, 2025
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G9B11 - What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?
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0
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0
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December 15, 2025
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G9B05 - How does antenna height affect the azimuthal radiation pattern of a horizontal dipole HF antenna at elevation angles higher than about 45 degrees?
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0
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0
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December 15, 2025
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G9A10 - What standing wave ratio results from connecting a 50-ohm feed line to a 10-ohm resistive load?
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0
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0
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December 15, 2025
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G9D11 - Which of the following is a disadvantage of multiband antennas?
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0
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0
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December 15, 2025
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G9D05 - What is an advantage of vertically stacking horizontally polarized Yagi antennas?
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0
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0
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December 15, 2025
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G9C11 - What is a beta or hairpin match?
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0
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0
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December 15, 2025
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G9C04 - How does antenna gain in dBi compare to gain stated in dBd for the same antenna?
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0
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0
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December 15, 2025
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G9B10 - What is the approximate length for a 1/2 wave dipole antenna cut for 14.250 MHz?
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0
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0
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December 15, 2025
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G9B04 - What is the radiation pattern of a dipole antenna in free space in a plane containing the conductor?
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0
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0
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December 15, 2025
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G9A09 - What standing wave ratio results from connecting a 50-ohm feed line to a 200-ohm resistive load?
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0
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0
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December 15, 2025
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G9D10 - In which direction or directions does an electrically small loop (less than 1/10 wavelength in circumference) have nulls in its radiation pattern?
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0
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0
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December 15, 2025
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G9D04 - What is the primary function of antenna traps?
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0
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0
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December 15, 2025
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G9A05 - How does the attenuation of coaxial cable change with increasing frequency?
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0
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0
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December 15, 2025
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G9A04 - What causes reflected power at an antenna’s feed point?
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0
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0
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December 15, 2025
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G9A03 - What is the nominal characteristic impedance of “window line” transmission line?
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0
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0
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December 15, 2025
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G9A02 - What is the relationship between high standing wave ratio (SWR) and transmission line loss?
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0
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0
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December 15, 2025
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G9A01 - Which of the following factors determine the characteristic impedance of a parallel conductor feed line?
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0
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0
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December 15, 2025
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G8C12 - Which type of code is used for sending characters in a PSK31 signal?
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0
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0
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December 15, 2025
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