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About the Technician Questions category
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14
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December 15, 2025
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T9B10 - What is the electrical difference between RG-58 and RG-213 coaxial cable?
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1
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47
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January 25, 2026
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T9B09 - What can cause erratic changes in SWR?
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15
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January 2, 2026
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T9B08 - Which of the following is a source of loss in coaxial feed line?
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22
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January 2, 2026
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T9A12 - What is an advantage of a 5/8 wavelength whip antenna for VHF or UHF mobile service?
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0
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24
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January 2, 2026
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T9A09 - What is the approximate length, in inches, of a half-wavelength 6 meter dipole antenna?
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0
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5
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January 2, 2026
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T9A07 - What is a disadvantage of using a handheld VHF transceiver with a flexible antenna inside a vehicle?
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0
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19
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January 2, 2026
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T8D12 - Which of the following best describes an amateur radio mesh network?
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0
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23
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January 2, 2026
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T8D11 - What is an ARQ transmission system?
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0
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14
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January 2, 2026
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T8D10 - Which of the following operating activities is supported by digital mode software in the WSJT-X software suite?
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0
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17
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January 2, 2026
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T8D07 - Which of the following describes DMR?
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0
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12
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January 2, 2026
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T8D05 - Which of the following is an application of APRS?
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0
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14
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January 2, 2026
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T8D04 - What type of transmission is indicated by the term "NTSC?"
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5
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January 2, 2026
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T8C10 - What is required before using the EchoLink system?
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18
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January 2, 2026
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T8C09 - Which of the following protocols enables an amateur station to transmit through a repeater without using a radio to initiate the transmission?
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0
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5
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January 2, 2026
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T8C08 - What is the Internet Radio Linking Project (IRLP)?
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15
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January 2, 2026
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T8C02 - Which of these items would be useful for a hidden transmitter hunt?
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31
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January 2, 2026
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T8B12 - Which of the following is a way to determine whether your satellite uplink power is neither too low nor too high?
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0
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5
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January 2, 2026
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T8B08 - What is meant by the statement that a satellite is operating in U/V mode?
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0
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18
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January 2, 2026
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T8B06 - Which of the following are inputs to a satellite tracking program?
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26
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January 2, 2026
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T7B09 - What should be the first step to resolve non-fiber optic cable TV interference caused by your amateur radio transmission?
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0
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6
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January 2, 2026
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T7A09 - What is the function of the SSB/CW-FM switch on a VHF power amplifier?
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0
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4
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January 2, 2026
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T6C09 - What is component 4 in figure T-2?
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7
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January 2, 2026
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T6C05 - What is component 4 in figure T-1?
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5
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January 2, 2026
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T6A12 - What type of switch is represented by component 3 in figure T-2?
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0
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12
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January 2, 2026
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T5C12 - What is impedance?
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15
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January 2, 2026
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T0C11 - What is the definition of duty cycle during the averaging time for RF exposure?
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13
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January 2, 2026
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T0C10 - Why is duty cycle one of the factors used to determine safe RF radiation exposure levels?
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18
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January 2, 2026
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T0C09 - How can you make sure your station stays in compliance with RF safety regulations?
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25
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January 2, 2026
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T0C08 - Which of the following actions can reduce exposure to RF radiation?
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11
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January 2, 2026
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