Logging in (or registering) will help the system to select questions that you need to focus on.
Which of these precautions should be taken when installing devices for lightning protection in a coaxial cable feed line?
What is a good precaution to observe before climbing an antenna tower?
Why do exposure limits vary with frequency?
Who selects a Frequency Coordinator?
Which frequency is within the 6 meter amateur band?
How soon after passing the examination for your first amateur radio license may you operate a transmitter on an Amateur Radio Service frequency?
Under which of the following circumstances may an amateur radio station make one-way transmissions?
Who does the FCC presume to be the control operator of an amateur station, unless documentation to the contrary is in the station records?
Which of the following is an acceptable language to use for station identification when operating in a phone sub-band?
What is a band plan, beyond the privileges established by the FCC?
What is the most common use of the “reverse split” function of a VHF/UHF transceiver?
Which of the following is an accepted practice for an amateur operator who has checked into a net?
What should you do if another operator reports that your station’s 2 meter signals were strong just a moment ago, but now they are weak or distorted?
How does the wavelength of a radio wave relate to its frequency?
What mode is responsible for allowing over-the-horizon VHF and UHF communications to ranges of approximately 300 miles on a regular basis?
Where should the negative return connection of a mobile transceiver's power cable be connected?
Which of the following would reduce ignition interference to a receiver?
Electrical power is measured in which of the following units?
What is the approximate amount of change, measured in decibels (dB), of a power increase from 5 watts to 10 watts?
What does the abbreviation “RF” refer to?
What is the voltage across each of two components in series with a voltage source?
What electrical component is used to protect other circuit components from current overloads?
Which of the following components can consist of three layers of semiconductor material?
What is component 6 in figure T2?
What is the name of a device that combines several semiconductors and other components into one package?
Which of the following describes combining speech with an RF carrier signal?
How can overload of a non-amateur radio or TV receiver by an amateur signal be reduced or eliminated?
Why should the outer jacket of coaxial cable be resistant to ultraviolet light?
Which of the following might damage a multimeter?
Which sideband is normally used for 10 meter HF, VHF, and UHF single-sideband communications?
What is the impact of using too much effective radiated power on a satellite uplink?
How might you obtain a list of active nodes that use VoIP?
Which of the following best describes DMR (Digital Mobile Radio)?
In which direction does a half-wave dipole antenna radiate the strongest signal?
What is the electrical difference between RG-58 and RG-8 coaxial cable?